Question

A istwice as efficient as B and can finish a piece of work in 22 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 44 days Correct Answer Incorrect Answer
D 45 days Correct Answer Incorrect Answer

Solution

Ratio of efficiencyof A and B = 2: 1
A will take 1/2 of time as compared to B.
Say, B takes 2x days and A takes x days.
∴ 2x – x = 22 ⇒ x = 22
∴ B takes 22 × 2 = 44 days to do the work.

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