A completes 40% of a work in 8 days. If B is 60% as efficient as A, find the time taken by complete the rest of the work.

A

20 days

B

18 days

C

30 days

D

24 days

Correct Option -** A**

Explaination

Time taken by A to complete 60% of the work

= 8*60/40

= 12 days

B is 60% as efficient as A

Time taken by B to complete 60% of the work

= 12*100/60

= 20 days

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