421 . The present ratio of students and teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?

A. 5
B. 8
C. 10
D. 12
E. 15

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Answer: Option E

Explanation:

3.5 - এর শতকরায় প্রকাশ হচ্ছে (3.5 ×100)%
= 350 %

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422 . The price of 10 chairs is equal to that of 4 tables . The price of 15 chairs and 2 tables together is Tk. 4000. The total price of 12 chairs and 3 tables is-

A. TK. 3500
B. Tk. 3750
C. Tk. 3840
D. None of these

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Answer: Option D

Explanation:

Assume the cost of Table and Chair is Tk. X and Tk. Y
Write the Equation for the Question:
•The price of 10 chairs is equal to that of 4 tables
10X = 4Y
Y = 5x/2
•The price of 15 chairs and 2 tables together is Tk. 4000.
15X + 2*Y = 4000
15X + 2*5x/2 = 4000
20X = 4000
X = 200
•Substitute X value in Equation.
So, Y = (5/2*200)
Y = 500
•The total price of 12 chairs and 3 tables is,
12X + 3Y = 12*200 + 3*500
= 2400 + 1500
= 3900
The total price of 12 chairs and 3 tables is 3900 Taka.

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 10%
B. 15%
C. 20%
D. 30%

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Answer: Option D

Explanation:

Cost price of coat is $500 .
Cost is reduced by $150

Percent decrease in prce = (500/150)×100=30

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 70.40
B. 82.00
C. 83.33
D. 86.40

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Answer: Option D

Explanation:

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প্রবেশনারি অফিসার | 02-04-2022

A. 5%
B. 17.5%
C. 25%
D. 35%
E. 38%

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Answer: Option E

Explanation:

Combined Percent = p + q + pq/100

= 20 + 15 + ( 20 × 15/100) = 38%

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Bangladesh Bank - Assistant Director - 2011

A. 90
B. 100
C. 85
D. 50

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Answer: Option C

Explanation:

price of 2 banana = 40 tk

price of 1 banana = 40/2 = 20 tk

price of 2 kiwis = 50-20 = 30 tk

price of 1 kiwis = 30/2 = 15 tk

Now, price of 2 bananas and 3 kiwis = 2*20+3*15 = 40+45 = 85 tk (Ans)

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427 . The principal monetary policy objective is to reduce substantially the import surplus of the coming years while resuming economic growth. Realization of this goal entails a marked structural change of the economy, which can be brought about by freezing th

A. Economic growth will result in a structural change of the economy
B. Only if people consume less can the economy grow
C. The import surplus can be reduced if investment is restricted
D. Only a structural change in the economy can substantially increase imports
E. People will have to be persuaded to give up consumption for the national good

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Answer: Option E

Explanation:

To determine which option weakens the given statement, let's analyze each option in relation to the goal of reducing the import surplus while resuming economic growth:

A. Economic growth will result in a structural change of the economy.
This option supports the statement by suggesting that economic growth will bring about the necessary structural change in the economy to reduce the import surplus. It does not weaken the statement.

B. Only if people consume less can the economy grow.
This option supports the statement by suggesting that reducing consumption is necessary for economic growth and reducing the import surplus. It does not weaken the statement.

C. The import surplus can be reduced if investment is restricted.
This option weakens the statement by suggesting that restricting investment can reduce the import surplus. It implies that reducing investment, rather than a structural change, is the key to achieving the goal. However, it does not address the resumption of economic growth, which is also an objective.

D. Only a structural change in the economy can substantially increase imports.
This option does not weaken the statement but rather supports it by suggesting that a structural change in the economy is necessary to increase imports. It does not address the goal of reducing the import surplus.

E. People will have to be persuaded to give up consumption for the national good.
This option weakens the statement by suggesting that people need to be persuaded to give up consumption. It implies that reducing consumption may be difficult and requires persuasion, which may hinder the goal of reducing the import surplus while resuming economic growth.

Based on the analysis, option E: People will have to be persuaded to give up consumption for the national good weakens the statement the most. It implies that reducing consumption may not be easily achievable and may require persuasion, potentially challenging the goal of reducing the import surplus while resuming economic growth.

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Bangladesh Bank - Assistant Director - 2011

A. 2/3
B. 3/4
C. 3/7
D. 1/2
E. None of them

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Answer: Option D

Explanation:

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Bangladesh Bank - Assistant Director - 2012

A. 15
B. 33
C. 34
D. 51

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Answer: Option D

Explanation:

Prime numbers greater than 2 but less than 6 = { 3 , 5 }
Prime numbers greater than 13 but less than 25 = { 17 , 19 , 23 }

Product P of two prime numbers between 9 and 55 is 51 ( i.e 3*17 )

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 4639.4
B. 4769.6
C. 4830.8
D. None of these

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Answer: Option D

Explanation:

Let the cost price of the article be Tk. x.

∴ 3362 − x = x − 2346

∴ x = C.P. =	3362 + 2346	= 2,854/ -
	2

∴ S.P. corresponding to a 20% profit = 1.2 × 2854 = Tk. 3,424.8/ -

Hence, option D is correct.

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Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 64
B. 6
C. 36
D. 32
E. 16

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Answer: Option E

Explanation:

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432 . The ratio between the perimeter and the breadth of a rectangle is 5 :1 . If the area of the rectangle is 216 cm2. what is the lenth of the rectangle?

A. 16 cm
B. 24 cm
C. 18 cm
D. None of these

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Answer: Option C

Explanation:

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 7
B. 11
C. 13
D. 16

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Answer: Option C

Explanation:

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 2/7
B. 510
C. 5/9
D. 2/9
E. None of them

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Answer: Option D

Explanation:

total = 9 balls

red ball⇨ 2

So probability is = 2/9

Right Answer is ⇨ 2/9

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Bangladesh Bank - Assistant Director - 2012

A. 15
B. 40
C. 25
D. 20

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Answer: Option D

Explanation:

Let, the two numbers are 2P and 3P

2P+3P = 100

5P = 100

P = 20

So, the two numbers are 40 and 60

Now, the difference is = 60-40 = 20 (Ans)

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421 . The present ratio of students and teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?

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422 . The price of 10 chairs is equal to that of 4 tables . The price of 15 chairs and 2 tables together is Tk. 4000. The total price of 12 chairs and 3 tables is-

423 . The price of a coat in a certain store is tk 500. If the price of the coat is to be reduced by tk 150, by what percent is the price to be reduced?

424 . The price of a pair of sneakers was Tk. 80 for the last six months of last year. On january first, the price increase, an employee bought these sneakers with a 10% employee discount . What price did the employee pay?

425 . The price of corn rose 20% two years ago and 15% last year . what is the combined percent increase in price ?

426 . the price of two bannas is Tk. 40, and the sum of the price of one banna and two kiwis is Tk. 50. The sum of the prices of two bannas and three kiwis is Tk.

427 . The principal monetary policy objective is to reduce substantially the import surplus of the coming years while resuming economic growth. Realization of this goal entails a marked structural change of the economy, which can be brought about by freezing th

428 . The product of two numbers x and y is twice the sum of the numbers. What is the sum of the reciprocals of x and y ?

429 . The product P of two prime numbers is between 9 and 55. If one of the prime numbers is greater than 2 but less than 6 and the other is greater than 13 but less than 25, then P =

430 . The profit earned after selling an article for Tk. 3,362 is the same as the loss incurred after selling the article for Tk. 2,36. At what selling price will a trader make a 20% profit on this article?

431 . The radious of the earth is 4 times that of the moon. How many times the surface area of the moon is to that of the earth?

432 . The ratio between the perimeter and the breadth of a rectangle is 5 :1 . If the area of the rectangle is 216 cm2. what is the lenth of the rectangle?

433 . The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

434 . The ratio of the number of red balls , to yellow balls , to green balls in an urn is 2 : 3 : 4 . What is the probability that a ball chosen at random from the urn is a red ball ?

435 . The ratio of two number is 2:3 The sum of the number is 100. The diffrence between two numbers is-

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