Hello Aspirants. Welcome to Online Quant Section in AffairsCloud.com. We are starting **IBPS Clerk course 2015 **and we are creating sample questions in **Quantitative Aptitude** section, type of which will be asked in IBPS Clerk Prelims Exam.

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**A and B can complete a piece of work in 10 and 16 days respectively. They both start working, and after working for 4 days, A left. What is the total number of day for which B worked?**

A) 35 days

B) 40 days

C) 28/5 days

D) 48 days

E) 48/5 days**E) 48/5 days**

Explanation:

A+B 1 day work = 1/10 + 1/16 = 13/80

They worked for 4 days, so work done in 4 days = 4 * 13/80 = 13/20

Work left = 1 – 13/20 = 7/20

B does 1/16 work in 1 day so 7/20 work in 7/20 * 16/1 = 28/5 days

So total 4 + 28/5**There are 5 white, 5 black and 5 green balls in a bag. Three balls are drawn at random. What is the probability that 2 are green**

A) 19/91

B) 20/91

C) 21/50

D) 19/35

E) 20/81**B) 20/91**

Explanation:

5C2 * 10C1/15C3**Two articles costs Rs 18,000. One of them is sold at 20% profit and other at 20% loss. It is found that the selling price of both articles is same. Find the ratio of the cost price of 1st article to 2nd article.**

A) 2 : 5

B) 3 : 2

C) 2 : 3

D) 1 : 4

E) 1 : 5**C) 2 : 3**

Explanation:

Let CP of one sold at 20% profit = x

So 120/100 * x = 80/100 * (18,000-x)

x = 7200

7200 : 10800 = 2 : 3**A and B start a business. A invests Rs 10,000 and B Rs 20,000. After 6 months, both invested Rs 20,000 more. Find the ratio in which their profits will be shared.**

A) 2 : 5

B) 3 : 2

C) 2 : 3

D) 1 : 4

E) 1 : 5**C) 2 : 3**

Explanation:

10000*6 + 30000*6 : 20000*6 + 40000*6**Four years ago the ratio between the ages of Taani and Ananya was 4:5. The ratio between their present ages is 14:17. What will be Ananya’s age 5 years hence?**

A) 34 years

B) 33 years

C) 38 years

D) 28 years

E) None of these**E) None of these**

Explanation:

T/A = 14/17

T-4/A-4 = 4/5

Solve the equations**The average of 5 numbers is 56.4. The average of first and second number is 53. The average of fourth and fifth number is 56. What is the third number?**

A) 63

B) 64

C) 67

D) 68

E) None of these**B) 64**

Explanation:

56.4*5 – [53*2 + 56 *2]**What will be the compound interest accrued on a principal amount of 32,000 at the rate of 11 p.c.p.a after a period of 2 years?**

A) Rs. 7429.5

B) Rs. 7423.5

C) Rs. 7428.2

D) Rs. 7427.2

E) None of these**D) Rs. 7427.2**

Explanation:

CI = 32000 [(1+11/100)^2 – 1]**How many words can be formed with the letters of the word ANKITA?**

A) 720

B) 5040

C) 120

D) 360

E) None of these**D) 360**

Explanation:

6!/2!**A boat goes from point A to B upstream and returns back to point A. If the time of journey from A to B is twice that of from B to point A, then the ratio of speed of the boat in still water to the speed of the current is**

A) 1 : 3

B) 3 : 1

C) 2 : 1

D) 4 : 1

E) Cannot be determined**B) 3 : 1**

Explanation:

Use:

B = [t_{u}+ t_{d}] / [t_{u}– t_{d}] * R

B = [2s+s] / [2s-s] * R

B/R = 3/1**There are 3 red balls, 4 blue balls and 5 white balls. 2 balls are chosen randomly. Find probability that atmost one ball is white.**

A) 28/43

B) 28/33

C) 7/33

D) 5/23

E) None of these**B) 28/33**

Explanation:

Case 1: 0 white ball

7C2/12C2

Case 2: 1 white ball and other any of blue or red

7C1*5C1/12C2

Add the two cases.

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