If 5 men and 2 boys can do in a day 4 times as much work as a man and a boy together, find the ratio of the efficiency of a man to that of a boy. MCQ with Answer and Explanation

Question

If 5 men and 2 boys can do in a day 4 times as much work as a man and a boy together, find the ratio of the efficiency of a man to that of a boy.

A. 4 : 1

B. 1 : 2

C. 3 : 1

D. 2 : 1

Answer: Option D

Solution (By JKSSB Mock Tests)

Given: 5M + 2B = 4 * (1M + 1B) => 5M + 2B = 4M + 4B => 1M = 2B => M / B = 2 / 1. The ratio of efficiency of a man to a boy is 2 : 1.

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 can do a work in 17 days and B in 17 days. In how many days will they complete 75% of the work together?

A. 13.88

B. 11.38

C. 8.88

D. 6.38

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combined time for full work multiplied by 0.75 = 6.38 days.

This question belongs to: Maths Time and Work

Question #2

Share Report

A can do a work in 12 days and B in 22 days. They work together for 5 days. What percentage of work remains?

A. 35.61

B. 50.61

C. 40.61

D. 45.61

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Remaining work = (1 - 5*(1/12+1/22)) ×100 = 35.61%.

This question belongs to: Maths Time and Work

Question #3

Share Report

17 men can complete a work in 14 days. If 22 men work at the same rate, the work will be completed in:

A. 10.82

B. 15.82

C. 25.82

D. 20.82

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Total work = 238 man-days. Time = 238/22 = 10.82 days.

This question belongs to: Maths Time and Work

Explore All Time and Work MCQs