Q) A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

a) 5 days              b) 5 1/2 days               c) 6 days                     d) 8 days

Ans:

B’s 1 day’s work = 1/15

B’s 10 days work = 10/15 = 2/3

Balance work = 1 – 2/3 = 1/3

Time taken by A to do full work = 18 days

Time taken by A to do 1/3 work = 18 x 1/3 = 6 days

Hence, Answer is [C].

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