A can complete a work in 12 days and B in 24 days. After working together for 5 days, what percentage of work remains? MCQ with Answer and Explanation

Question

Share Report Error

A can complete a work in 12 days and B in 24 days. After working together for 5 days, what percentage of work remains?

A. 37.5

B. 45.0

C. 42.5

D. 40.0

Answer: Option A

Solution (By JKSSB Mock Tests)

Remaining work = (1 - 5*(1/12+1/24))×100 = 37.5%.

This question belongs to: Maths Time and Work

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Time and Work Questions

Question #1

Share Report

A and B work together. A alone can complete the work in 30 days and B alone in 36 days. What percentage of the total daily work is contributed by A?

A. 57.05

B. 62.05

C. 54.55

D. 59.55

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
A share = (1/30) / (1/30+1/36) ×100 = 54.55%.

This question belongs to: Maths Time and Work

Question #2

Share Report

If 12 men or 18 women can reap a field in 14 days, then the number of days that 8 men and 16 women will take to reap it is:

A. 10 days

B. 9 days

C. 8 days

D. 7 days

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
12 Men = 18 Women => 1 Man = 1.5 Women. 8 men + 16 women = 8 * 1.5 + 16 = 12 + 16 = 28 women. Since 18 women take 14 days, 28 women will take (18 * 14) / 28 = 252 / 28 = 9 days.

This question belongs to: Maths Time and Work

Question #3

Share Report

A can complete a work in 18 days and B in 16 days. If they work together, the work will be completed in:

A. 18.47

B. 23.47

C. 13.47

D. 8.47

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combined rate = 1/18 + 1/16. Required time = 8.47 days.

This question belongs to: Maths Time and Work

Explore All Time and Work MCQs