Online Quiz

← Back
Get daily current affairs & exam alerts – follow us YouTube WhatsApp Channel Telegram Channel Facebook Page Instagram
Share with friends & study groups
Link to this page from your website / blog (HTML code)
1.  
A and B together can do a job in 12 days. A works on it for 4 days and then B alone finishes the rest in 18 days. B alone can do the whole job in:

Correct Answer: C [21 days]

Explanation:

4 days of A + 18 of B = 4 days of (A + B) + 14 of B → 14 days of B = 1 − 1/3 = 2/3 → B = 21 days.

2.  
10 men can finish a job in 12 days, and 15 women can finish it in 16 days. In how many days will 5 men and 6 women finish it?

Correct Answer: A [15 days]

Explanation:

1 man = 1/120, 1 woman = 1/240 per day → 5/120 + 6/240 = 16/240 = 1/15 → 15 days.

3.  
Pipes A and B can fill a tank in 20 and 30 minutes; pipe C can empty it in 15 minutes. A and B are opened together in the empty tank, and after 6 minutes C is also opened. In how many minutes in all is the tank full?

Correct Answer: E [36 minutes]

Explanation:

LCM 60: A 3, B 2, C −4. 6 min → 30 units; then net 1 unit/min → 30 more minutes; total 36.

4.  
A is three times as efficient as B and takes 40 days less than B to finish a job. In how many days can they finish it together?

Correct Answer: B [15 days]

Explanation:

Times 1 : 3 → difference 2 parts = 40 → A 20, B 60 → 20 × 60/80 = 15 days.

5.  
A can do a job in 20 days and B in 30 days. They start together, but A leaves 5 days before the job is finished. The job is finished in:

Correct Answer: D [15 days]

Explanation:

LCM 60: 3(T − 5) + 2T = 60 → 5T = 75 → T = 15 days.

6.  
A can do a job in 6 days and B in 8 days. With the help of C they finish it in 3 days and are paid ₹ 3,200. C's share is:

Correct Answer: C [₹ 400]

Explanation:

In 3 days A does 1/2, B 3/8, so C did 1/8 → 1/8 × 3,200 = ₹ 400.

7.  
12 men can complete a job in 18 days. After they have worked for 6 days, 4 more men join them. In how many more days is the job finished?

Correct Answer: A [9 days]

Explanation:

Total 216 man-days; done 72; remaining 144 ÷ 16 men = 9 days.

8.  
A and B can do a job in 18 days, B and C in 24 days, and A and C in 36 days. How many days will C alone take?

Correct Answer: B [144 days]

Explanation:

LCM 72: pairs 4, 3, 2 → all three 9/2 = 4.5 units/day; C = 4.5 − 4 (A + B) = 0.5 → 144 days.

9.  
Spot My Mistake: "A fills a tank in 10 h, B in 15 h, and a leak empties it in 30 h. (1) LCM = 30 units. (2) A = 3, B = 2, leak = 1 unit/h. (3) Net = 3 + 2 + 1 = 6 units/h. (4) Time = 30 ÷ 6 = 5 h." Which step is wrong, and what is the correct time?

Correct Answer: C [Step (3); 7.5 h]

Explanation:

The leak must be subtracted: 3 + 2 − 1 = 4 units/h → 30 ÷ 4 = 7.5 h.

📘 IBPS Clerk 2026 – B2 Quantitative Aptitude (PDF book)
Here you get the answer with a one-line explanation. 842 questions, each with a full step-by-step explanation · shortcuts, tables, trap alerts · Prelims + Mains sectional mocks. All 5 books together: ₹599.
Get the book – ₹149 →
Score: 0 Answered: 0 / 0