Question 85

Makarand works 2 times as fast as Samarjit. If Samarjit can complete a job alone in 27 days, then in how many days can they together finish the job?

Solution

Let total work to be done be 27 units.

Samarjit's efficiency = $$\frac{27}{27} = 1$$ units/day

Makarand's efficiency = $$2 \times 1 = 2$$ units/day

=> Samarjit's and Makarand's 1 day's work together = 1 + 2 = 3 units/day

$$\therefore$$ Time taken by them together = $$\frac{27}{3} = 9$$ days

=> Ans - (D)

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