AP ICET 2016 Paper

Question : 106 of 200

Marks: +1, -0

A person A can turnout thrice as much work as B can do. B alone can complete that work in 20 days. After both of them worked together for 4 days, A left the work and B continued till the end. Then the time (in days) taken by B to complete the remaining work after A left the job, is

Validate

Solution:

A is thrice as efficient as B.
⇒ A alone can complete the work in

(20/3)

days
Let B take extra d days to complete the remaining work.

⇒4/(20/3)+{4+d}/20=1

⇒{12+4+d}/20=1

⇒d=20-16=4

days

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