1156 . A shopkeeper sells 5 mangoes at a price he bought 4 mangoes. What is the percentage (%) of loss or gain?

A. 10
B. 15
C. 20
D. 25

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Answer: Option C

Explanation:

Let the price of 4 mangoes bought be X.

Price per mango bought = X/4

Price per mango sold = X/5

Loss = (X/4 - X/5) / (X/4) × 100% = (X/20) / (X/4) ×100% = 20%

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1157 . A shopkeeper sells a pair of sunglasses at a profit of 25%. If he had bought it at 25% less and sold it for Tk. 10 less, he would have gained 40%. Determine the cost price of the pair of sunglasses.

A. Tk. 25
B. Tk. 50
C. Tk. 60
D. Tk. 75

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Answer: Option B

Explanation:

ধরি, সানগ্লাসের ক্রয়মূল্য 100 টাকা
25% লাভে বিক্রয়মূল্য = 100 + 100 এর 25% = 100 + 25 = 125 টাকা
আবার, 25% কমে কিনলে ক্রয়মূল্য হতো (100 – 100 এর 25%) টাকা = (100 – 25) বা, 75 টাকা
সেক্ষেত্রে, 40% লাভে বিক্রয়মূল্য = 75 + 75 এর 40% = 75 + 30 = 105 টাকা
বিক্রয়মূল্যের পার্থক্য (125 – 105) বা 20 টাকা
বিক্রয়মূল্য 20 টাকা কম হলে মূল ক্রয়মূল্য 100 টাকা

∴ ‘’ 10 ” ” ” ” ” (100×10)/20 = 50 টাকা

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1158 . A shopkeeper sold and item at 20% profit and another item at 10% loss. If the cost price of both the items is same, find overall profit percent.

A. 7.55%
B. 5%
C. 6.00%
D. 6.50%

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Answer: Option B

Explanation:

Let, cost price of per item 100 Tk.

1st item sell price = 120

2nd item sell price = 90

Total cost price = 100 + 100 = 200

Total sell price = 120 + 90 = 210

Profit percentage = {(210 - 200)/200}×100 = 5% .

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Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 130
B. 170
C. 173
D. None

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Answer: Option D

Explanation:

9 সেকেন্ড এ তৈরি করে 30 টি স্টেপ

60 সেকেন্ড এ তৈরি করে ( 60 × 30 /9) = 200 টি স্টেপ

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1160 . A short distance athlete has taken 60 sec to cover 100m. If he makes 30 steps in 9, sec how many steps has he taken in that time?

A. 130
B. 170
C. 173
D. None

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Answer: Option D

Explanation:

He makes in 9 sec = 30 steps

So,he will make 60 sec = (30×60)/9 = 200 steps

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1161 . A solid cube of side 6 is first painted pink and then cut into smaller cubes of side 2. How many of the smaller cubes have on exactly 2 sides>

A. 13
B. 27
C. 30
D. 12

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Answer: Option D

Explanation:

A solid cube of side 6 is first painted pink and then cut into smaller cubes of side 2.

This means , we get a 3 x 3 x 3 cube
To get the the sides with just 2 faces painted, picture the edges of the each of the sides of the cube.
Apart from the corners(which have 3 faces painted), all other small cubes have 2 faces painted.

In total, we have 12 cubes of side 2 with exactly 2 sides painted

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1162 . A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are 100 seniors, 150 juniors, and 200 sophomores who applied. Each senior's name is placed in the lottery 3 times, each junior's name, 2 times, and each sophomore's, 1 time. What is the probability that a senior's name will be chosen?

A. 1/8
B. 2/9
C. 2/7
D. 3/8
E. None of these

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Answer: Option D

Explanation:

Total number of seniors' names = 3 x 100 = 300

Total number of juniors' names = 2 x 150 = 300

Total number of sophomores' names = 200

Total student names for lottery = 300 + 300 + 200 = 800

Probability of a senior's name to be chosen = 300 / 800 = 3/8

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1163 . A speed of 14 meters per second is the same as-

A. 50 km/hr
B. 46.6 km/hr
C. 28 km/hr
D. 70 km/hr

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Answer: Option A

Explanation:

14m/sec = 14×(18/5)km/hour

= 50.4 km/hour

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1164 . A sport club has 50 members. Of these. 35 play golf, 30 play soccer and 18 play both golf and soccer. How many members do play nether golf nor soccer?

A. 8
B. 5
C. 3
D. 17

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Answer: Option C

Explanation:

only golf = 35-18= 17

only soccer= 30-18= 12

Both play= 18

So,at least one play= 17+12+18= 47

So, not any play= 50-47= 3

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সমন্বিত ৭ ব্যাংক || সিনিয়র অফিসার-05-11-2021 ||

A. 150
B. 180
C. 300
D. 330

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Answer: Option D

Explanation:

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1166 . A square carpet with an area of 169 cm² must have 2 cm cut off one of its edges in order to be a perfect fit for a rectangular room. what is the area (in cm²) of this rectangular room?

A. 117
B. 143
C. 145
D. 165

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Answer: Option B

Explanation:

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Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

A. a^2
B. 2a^2
C. 3a^2
D. 4a^2

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Answer: Option B

Explanation:

To find the difference between the areas of the outer square and the inner square, you can use the following approach:

Let the side length of the inner square be "x," and the side length of the outer square be "y." Since the inner square is inscribed in the circle, its diagonal is equal to the diameter of the circle, which is 2a. Using the Pythagorean theorem, we can relate x and the radius (a) of the circle:

x^2 + x^2 = (2a)^2 2x^2 = 4a^2 x^2 = 2a^2 x = a√2

Now, the side length of the outer square (y) is equal to the diameter of the circle, which is 2a:

y = 2a

To find the difference in their areas:

Area of outer square - Area of inner square = y^2 - x^2

Substitute the values of y and x:

(2a)^2 - (a√2)^2 = 4a^2 - 2a^2 = 2a^2

So, the difference between the areas of the outer square and the inner square is 2a^2.

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Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

A. 34 m
B. 1156 m
C. 136 m
D. Cannot be determined

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Answer: Option C

Explanation:

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বাংলাদেশ ব্যাংক || সহকারী পরিচালক (AD) (20-10-2023)

A. TK. 9000
B. TK. 8500
C. TK. 8000
D. TK. 7500
E. None of these

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Answer: Option A

Explanation:

Let, the capital of B = x tk

According to the question,

(3500×12) /7x = 2/3

14x = 3500×12

x = ( 3500×12×3)/14

x = 9000 Tk.

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সাধারণ বীমা কর্পোরেশন || সহকারী ব্যবস্থাপক (08-11-2024) || 2024

A. 30%
B. 40%
C. 25%
D. 50%
E. None of these

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Answer: Option E

Explanation:

(2 + 3) বা 5 বছরে সুদাসল = 300
এবং বছর পর সুদাসল = 240
3 জছরের সুদ = 60

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1156 . A shopkeeper sells 5 mangoes at a price he bought 4 mangoes. What is the percentage (%) of loss or gain?

1157 . A shopkeeper sells a pair of sunglasses at a profit of 25%. If he had bought it at 25% less and sold it for Tk. 10 less, he would have gained 40%. Determine the cost price of the pair of sunglasses.

1158 . A shopkeeper sold and item at 20% profit and another item at 10% loss. If the cost price of both the items is same, find overall profit percent.

1159 . A short distance athelte has taken 60 sec to cover 100m. If he makes 30 steps in 9 sec,how many steps has he takenin that time?

1160 . A short distance athlete has taken 60 sec to cover 100m. If he makes 30 steps in 9, sec how many steps has he taken in that time?

1161 . A solid cube of side 6 is first painted pink and then cut into smaller cubes of side 2. How many of the smaller cubes have on exactly 2 sides>

1163 . A speed of 14 meters per second is the same as-

1164 . A sport club has 50 members. Of these. 35 play golf, 30 play soccer and 18 play both golf and soccer. How many members do play nether golf nor soccer?

1165 . A sport goods store ordered an eual number of white and yellow tennis balls.The tennis ball company delivered 30 extra tennic ,making the ratio of white balls to yellow balls 6:5.How many tennic hall did the sport goods store originally order?

1167 . A square is inscribed in a circle of diameter 2a and another square is circumscribing circle. The difference between the areas of outer and inner squares is:

1168 . A square park is surrounded by a path of uniform width 2 meters all around it. The area of the path is 288 sq. meters. Find the perimeter of the park.

1169 . A starts business with TK. 3500 and after 5 months, B joins with A as his partner. After a year, the profit is divided in the ratio 2:3. What is B's contribution in the capital?

1170 . A stock decreases in value by 25%. By what percent must the value of that stock increase to reach its former value ?

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