Two persons, A and B can complete a piece of work in 21 days and the respective ratio of A’s and B’s efficiency is 2: 1. If A work at 37.5% more than his efficiency and B work at 25% less than his efficiency then in how many days can they complete the same piece of work?

Two persons, A and B can complete a piece of work in 21 days and the r

1.	Two persons, A and B can complete a piece of work in 21 days and the respective ratio of A’s and B’s efficiency is 2: 1. If A work at 37.5% more than his efficiency and B work at 25% less than his efficiency then in how many days can they complete the same piece of work?
A.	16 days
B.	17 days
C.	20 days
D.	19 days
E.	None of these
Answer» F.

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Two persons, A and B can complete a piece of work in 21 days and the respective ratio of A’s and B’s efficiency is 2: 1. If A work at 37.5% more than his efficiency and B work at 25% less than his efficiency then in how many days can they complete the same piece of work?

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