Discussion of Question with ID = 086 under Time-and-Work

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Question

Mr. X can finish a task in 13 days. Mr. Y can do the same work in 8 days. What is the ratio of the efficiencies of X : Y?

A

${8/13}$.

B

$1{8/13}$.

C

${2/3}$.

D

${9/14}$.

Soln.
Ans: a

The efficiency of X is $100/13$%, and the efficiency of Y is $100/8$%, so the ratio will be $8/13$


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