Question

A isthrice as efficient as B and can finish a piece of work in 32 days less than B. B can finish this work in how many days?

A 40 days Correct Answer Incorrect Answer
B 48 days Correct Answer Incorrect Answer
C 52 days Correct Answer Incorrect Answer
D 45 days Correct Answer Incorrect Answer

Solution

Ratio of efficiencyof A and B = 3: 1
A will take 1/3 of time as compared to B.
Say, B takes 3x days and A takes x days.
∴ 3x – x = 32 ⇒ x = 16
∴ B takes 16 × 3 = 48 days to do the work.

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