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