3286 . The ratio of ages of a father and his son was 5 : 1. What is the age of the son after five years, if the ratio of their ages is 3 : 1 by this time?

A. 7
B. 10
C. 12
D. 14

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Father = 5x

Son = x

So, ( 5x + 5) : ( x + 5) = 3 : 1

5x + 5)/ x + 5 = 3/1

5x + 5 = 3x + 15

2x = 10

x = 5

After 5 years son age = 5 + 5 = 10

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3287 . The ratio of ages of a father and his son was 5:1. What is the age of the son after five years, if the ratio of their ages is 3:1 by this time ?

A. 7
B. 10
C. 12
D. 14
E. 16

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Father = 5x

Son = x

So, ( 5x + 5) : ( x + 5) = 3 : 1

5x + 5)/ x + 5 = 3/1

5x + 5 = 3x + 15

2x = 10

x = 5

After 5 years son age = 5 + 5 = 10

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Agrani Bank Ltd. Recruitment Test for Senior Officer 12.02.2010

A. 6
B. 8
C. 10
D. 12

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

No. of boys = 24× 1/ (1 + 2) = 24 ×1/3 = 8

No. of Girls = 24 × 2/3 = 16

How many boys = 16 - 8 = 8

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3289 . The ratio of boys and girls in a class is 1:2 and the class as 24 students . How many boys would have to be admitted to the class in order to make the ratio of boys to girls 1 : 1?

A. 6
B. 8
C. 10
D. 12

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Boys = 24 × 1 / 1 + 2 = 8

Girls = 16

Now, ( 8 + x) ; 16 = 1 : 1

gives x = 8

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3290 . The ratio of boys and girls in a class is 4 : 5. If 10% of the boys and 20% of the girls failed in an examination, what percentage of students passed in the exam?

A. 80%
B. 82%
C. 85%
D. None

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3291 . The ratio of boys and girls in a class is 4:5. If 10% of the boys and 20%of the girls failed in an examination, what percentage of students passed in the exam?

A. 85%

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

বিমান বাংলাদেশ এয়ারলাইন্স লিঃ নিয়োগ পরীক্ষা-২০১৮। গ্রাউন্ড সার্ভিস অ্যাসিসটেন্ট। ১৩.১০.২০১৮

A. 75
B. 45
C. 25
D. 95

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

ধরি, ছাত্রের সংখ্যা = 3x ও ছাত্রীর সংখ্যা = 7x
∴∴ 3x + 7x = 150
⇒⇒ 10x = 150
⇒⇒ x = 1501015010
⇒⇒ x = 15
∴∴ ছাত্রের সংখ্যা = (3×15)3×15 জন = 45 জন।

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3293 . The ratio of boys to girls in a class 2/5. If 2 boys leave and 4 girls join the class, the ratio of the boys to the girls becomes 1/4. Originally, how many girls were in the class?

A. 16
B. 20
C. 21
D. 24

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3294 . The ratio of girls to boys in a class is 3:4. The number of students in the class could be any of the following except :

A. 36
B. 28
C. 48
D. none of these

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

অনুপাতের রাশিসমূহের যােগফল = 3 + 4 = 7 .
option - এর সংখ্যাগুলাের মধ্যে 28, 7 দ্বারা বিভাজ্য। সুতরাং শ্রেণির ছাত্র - ছাত্রী সংখ্যা 28

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3295 . The ratio of income of Kamran and Dolon is 3 : 4. The ratio of their expenditures is 4 : 5. Find the ratio of their savings if the savings of Kamran is one fourth of his income?

A. 5 : 4
B. 19 : 12
C. 4 : 6
D. 12 : 19
E. 10 : 20

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

Let's denote the income of Kamran as "3x" and the income of Dolon as "4x" (based on the given ratio).

We're also given that Kamran's savings are one-fourth of his income, so Kamran's savings would be (1/4) * 3x, which simplifies to (3/4) * x.

Now, let's consider their expenditures. The ratio of their expenditures is 4:5. Let the common multiplier for both expenditures be "k."

So, Kamran's expenditure is 4k, and Dolon's expenditure is 5k.

Now, let's calculate their savings. Savings are calculated as Income - Expenditure.

Kamran's savings = Income - Expenditure = 3x - 4k Dolon's savings = Income - Expenditure = 4x - 5k

Now, we're given that Kamran's savings are (3/4) * x, so we can set up an equation:

3x - 4k = (3/4) * x

Now, let's solve for k:

3x - (3/4) * x = 4k

(12/4)x - (3/4) * x = 4k

(9/4) * x = 4k

Now, solve for k:

k = (9/4) * x / 4

k = (9/16) * x

Now, we have expressions for Kamran's and Dolon's savings:

Kamran's savings = 3x - 4k = 3x - 4(9/16) * x Dolon's savings = 4x - 5k = 4x - 5(9/16) * x

Now, simplify these expressions:

Kamran's savings = (48/16)x - (36/16)x = (12/16)x = (3/4)x Dolon's savings = (64/16)x - (45/16)x = (19/16)x

Now, we have their savings in terms of x:

Kamran's savings = (3/4)x Dolon's savings = (19/16)x

Now, let's find the ratio of their savings:

(Kamran's savings)/(Dolon's savings) = [(3/4)x] / [(19/16)x]

Now, simplify the ratio:

(Kamran's savings)/(Dolon's savings) = (3/4) / (19/16)

To simplify further, multiply both the numerator and denominator by 16:

(Kamran's savings)/(Dolon's savings) = (3/4) * (16/19)

Now, calculate the ratio:

(Kamran's savings)/(Dolon's savings) = (48/76)

Simplify the ratio:

(Kamran's savings)/(Dolon's savings) = 12/19

So, the ratio of their savings is 12:19. The correct answer is 12:19.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3296 . The ratio of quantity of water in fresh fruit to that of dry fruits is 7 : 2 . If 400 km of dry fruits contain 50 km of water then find the weight of the water in same fruits when they were fresh?

A. 100 km
B. 150 km
C. 175 kg
D. 125 kg

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

ধরি, সতেজ ফল এবং শুল্ক ফলে পানি আছে যথাক্রমে 7x এবং 2x

2x = 50

x = 25

সতেজ ফলে পানি আছে = 7 × 25 = 175 kg

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3297 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?

A. 30
B. 60
C. 80
D. 90

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Let the angles be 2x, 3x and 4x respectively.

Now, 2x + 3x + 4x = 180°

or, 9x = 180°

or, x = 180/9 = 20

So, the largest angle = 4x = 4 x 20 = 80°

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3298 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?

A. 30
B. 60
C. 80
D. 90

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Let the angles be 2x, 3x and 4x respectively.

Now, 2x + 3x + 4x = 180°

or, 9x = 180°

or, x = 180/9 = 20

So, the largest angle = 4x = 4 x 20 = 80°.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

সমন্বিত ব্যাংক অফিসার (ক্যাশ) || (02-06-2023)

A. 2:1
B. 5:2
C. 11:7
D. 13:9

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Hints : Let their age be 7x and 3x

Now, 7x × 3x = 756

x2 = 756/7 × 3 = 36

x = 6

After 6 year the ratio would be = 7x + 6/3x + 6 = 7 × 6 + 6/3 × 6 + 6 = 2/1 = 2 : 1

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

3300 . The ratio of the number of boys and girls in a college is 7: 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?

A. 8:9
B. 17:18
C. 21:22
D. 18:19

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Let, number of boys =7P, number of girls = 8P

After increase number of boys = 7P+(7P*20)/100

= 7P+7P/5 = 42P/5

After increase number of girls = 8P+(8P*10)/100

= 8P+4P/5 = 44P/5

So, the new ratio of boys : girls = 42P/5 : 44P/5

= 42 : 44 = 21:22 (Ans)

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

সমন্বিত পাঁচ ব্যাংক || অফিসার ক্যাশ - 06.11.2021

3286 . The ratio of ages of a father and his son was 5 : 1. What is the age of the son after five years, if the ratio of their ages is 3 : 1 by this time?

3287 . The ratio of ages of a father and his son was 5:1. What is the age of the son after five years, if the ratio of their ages is 3:1 by this time ?

3288 . The ratio of boys and girls in a class is 1 : 2 and the classroom has 24 students. How many boys would have to be admited to make ratio of boys to girls 1 : 1?

3289 . The ratio of boys and girls in a class is 1:2 and the class as 24 students . How many boys would have to be admitted to the class in order to make the ratio of boys to girls 1 : 1?

3290 . The ratio of boys and girls in a class is 4 : 5. If 10% of the boys and 20% of the girls failed in an examination, what percentage of students passed in the exam?

3291 . The ratio of boys and girls in a class is 4:5. If 10% of the boys and 20%of the girls failed in an examination, what percentage of students passed in the exam?

3292 . The ratio of boys and girls in a school is to 7. If there are 150 boys and girls, how many boys are there?

3293 . The ratio of boys to girls in a class 2/5. If 2 boys leave and 4 girls join the class, the ratio of the boys to the girls becomes 1/4. Originally, how many girls were in the class?

3294 . The ratio of girls to boys in a class is 3:4. The number of students in the class could be any of the following except :

3295 . The ratio of income of Kamran and Dolon is 3 : 4. The ratio of their expenditures is 4 : 5. Find the ratio of their savings if the savings of Kamran is one fourth of his income?

3296 . The ratio of quantity of water in fresh fruit to that of dry fruits is 7 : 2 . If 400 km of dry fruits contain 50 km of water then find the weight of the water in same fruits when they were fresh?

3297 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?

3298 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?

3299 . The ratio of the father's age to his son's age is 7:3. The product of their ages is 756. The ratio of their ages after 6 years will be :

3300 . The ratio of the number of boys and girls in a college is 7: 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক

3286 . The ratio of ages of a father and his son was 5 : 1. What is the age of the son after five years, if the ratio of their ages is 3 : 1 by this time?

3287 . The ratio of ages of a father and his son was 5:1. What is the age of the son after five years, if the ratio of their ages is 3:1 by this time ?

3288 . The ratio of boys and girls in a class is 1 : 2 and the classroom has 24 students. How many boys would have to be admited to make ratio of boys to girls 1 : 1?

3289 . The ratio of boys and girls in a class is 1:2 and the class as 24 students . How many boys would have to be admitted to the class in order to make the ratio of boys to girls 1 : 1?

3290 . The ratio of boys and girls in a class is 4 : 5. If 10% of the boys and 20% of the girls failed in an examination, what percentage of students passed in the exam?

3291 . The ratio of boys and girls in a class is 4:5. If 10% of the boys and 20%of the girls failed in an examination, what percentage of students passed in the exam?

3292 . The ratio of boys and girls in a school is to 7. If there are 150 boys and girls, how many boys are there?

3293 . The ratio of boys to girls in a class 2/5. If 2 boys leave and 4 girls join the class, the ratio of the boys to the girls becomes 1/4. Originally, how many girls were in the class?

3294 . The ratio of girls to boys in a class is 3:4. The number of students in the class could be any of the following except :

3295 . The ratio of income of Kamran and Dolon is 3 : 4. The ratio of their expenditures is 4 : 5. Find the ratio of their savings if the savings of Kamran is one fourth of his income?

3296 . The ratio of quantity of water in fresh fruit to that of dry fruits is 7 : 2 . If 400 km of dry fruits contain 50 km of water then find the weight of the water in same fruits when they were fresh?

3297 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?

3298 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees? ​

3299 . The ratio of the father's age to his son's age is 7:3. The product of their ages is 756. The ratio of their ages after 6 years will be :

3300 . The ratio of the number of boys and girls in a college is 7: 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?

3298 . The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?