631 . 35% of Rifat's income is equal to 25% of Reaz's income . The ratio of their income is

A. 7 : 5
B. 4 : 3
C. 4 : 7
D. 5 : 7

View Answer	Favorite Question

Answer: Option D

Explanation:

Rifat = x

x * .35 % = y * 25%

x/y = 25/35 = 5/7

x : y = 5 : 7

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সাবস্ক্রিপশন লিংক

632 . 36 identical chairs must be arranged in rows with equal number of chairs in each row. Each row must be contain at least 3 chairs & there must be at least 3 rows. How many different arrangements are possible?

A. 2
B. 4
C. 5
D. 6

View Answer	Favorite Question

Answer: Option C

Explanation:

633 . 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

A. 12
B. 22
C. 18
D. 24

View Answer	Favorite Question

Answer: Option D

Explanation:

পূবালী ব্যাংক লিমিটেড || জুনিয়র অফিসার (30-09-2023) || 2023

A. 0.70
B. 3525
C. 4500
D. None of these

View Answer	Favorite Question

Answer: Option C

Explanation:

Using BODMAS in the given expression
=260×16+340
=4160+340
=4500

পূবালী ব্যাংক লিমিটেড || প্রবেশনারি অফিসার (30-09-2023) || 2023

A. 400
B. 500
C. 700
D. 450

View Answer	Favorite Question

Answer: Option B

Explanation:

636 . 4 men and 6 women can complete a work in 8 days while 3 men and 7 women can complete it in 10 days. In how many will 10 women complete it?

A. 40 days
B. 32 days
C. 36 days
D. 34 days

View Answer	Favorite Question

Answer: Option A

Explanation:

Basic bank recruitment 2018; auditor 26.01.2018 || Image 2018

A. 100
B. 80
C. 60
D. 50

View Answer	Favorite Question

Answer: Option D

Explanation:

X% o 160 = 40% of 200

or, X = 40 x 200 / 160 = 50

So, 50% of 160 is equal to 40% of 200.

638 . 40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390. The annual income of each executive is $420. What is the average annual income of all the employees in the factory together?

A. 405
B. 408
C. 415
D. 390

View Answer	Favorite Question

Answer: Option B

Explanation:

Standard Bank Plc || Trainee Assistant Officer (15-03-2025) || 2025

A. 16.089
B. 16.35
C. 16.944
D. 16.89

View Answer	Favorite Question

Answer: Option C

Explanation:

48.950 - 32.006 = 16.944

পূবালী ব্যাংক লিমিটেড || প্রবেশনারি অফিসার (30-09-2023) || 2023

A. (x + 2)(x - 2)(2x + 3)(2x - 3)
B. (2x + 1)(2x - 1)(2 + 6)(x - 6)
C. (x + 3)(x - 3)(2x + 2)(2x - 2)
D. (x + 2)(2x - 3)(2x + 3)(3x + 2)

View Answer	Favorite Question

Answer: Option A

Explanation:

641 . 5% of which number is 25?

A. 5
B. 250
C. 500
D. None of these

View Answer	Favorite Question

Answer: Option C

Explanation:

Let the number be z.

5% of z is 25

i.e, (5/100)z = 25

» z = (25 × 100)/5

» z = 500

So, The number is 500.

642 . 5.125/2.223 =?

A. 2.053
B. 2.305
C. 2.501
D. 2.522

View Answer	Favorite Question

Answer: Option B

Explanation:

5.125/2.223=2.30544309492

643 . 5 years ago the ratio of father's age to son's age was 5 : 1 and 2 years later father's age will be 3 times his son's age. What is the ratio of their present age?

A. 5 : 2
B. 7 : 3
C. 10 : 3
D. 11 : 7

View Answer	Favorite Question

Answer: Option C

Explanation:

let, the present ages of the son and the father are a and b, respectively.

The age of the father 5 years ago was five times the age of his son.

a - 5 = 5(b - 5)

or, a – 5 = 5b - 25

∴ 5b - a = 20 - - - - - - - - - (1)

2 years hence, the father’s age will be thrice that of his son.

a + 2 = 3(b + 2)

or, a + 2 = 3b + 6

∴ a – 3b = 4 - - - - - - - - - - - - (2)

On adding (1) and (2), we get:

2b = 24

∴b = 12

Substituting b = 12 in equation (2), we ge, a = 40

Ratio of their present ages = a:b = 40:12 = 10:3

ans: 10:3

644 . 50% of a% of b is 75% of b% of C. Which of the following is C ?

A. 1.5b
B. 0.667a
C. 0.5a
D. 1.25a

View Answer	Favorite Question

Answer: Option B

Explanation:

50% of a% of b% = 75% of b% of c

50/100 × a/100 × b = 75/100 × b/100× c

50 a = 75 c

c = 50/75 a

c = 0.667 a

645 . 50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers?

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

View Answer	Favorite Question

Answer: Option B

Explanation:

Total = Ittefaq + Prothom Alo - Both + None

= > 100% = 50% + 60% - 20% + None.

So, None = 10%

631 . 35% of Rifat's income is equal to 25% of Reaz's income . The ratio of their income is

632 . 36 identical chairs must be arranged in rows with equal number of chairs in each row. Each row must be contain at least 3 chairs & there must be at least 3 rows. How many different arrangements are possible?

633 . 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

634 . 3640 ÷ 14 × 16 +340 = ?

635 . 4% of which number is 20?

636 . 4 men and 6 women can complete a work in 8 days while 3 men and 7 women can complete it in 10 days. In how many will 10 women complete it?

637 . 40% of 200 is what percent of 160?

638 . 40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390. The annual income of each executive is $420. What is the average annual income of all the employees in the factory together?

639 . 48.95-32 .006 =?

640 . 4x4 +25x2 +36=?

641 . 5% of which number is 25?

642 . 5.125/2.223 =?

643 . 5 years ago the ratio of father's age to son's age was 5 : 1 and 2 years later father's age will be 3 times his son's age. What is the ratio of their present age?

644 . 50% of a% of b is 75% of b% of C. Which of the following is C ?

645 . 50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers?

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