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Mukesh and Dinesh together can complete a work in 120 days. Mukesh alone can complete the work in 150 days. In how many days can Dinesh alone complete the work?

Mukesh and Dinesh together can complete a work in 120 days. Mukesh alone can complete the work in 150 days. In how many days can Dinesh alone complete the work? Correct Answer 600

Let efficiencies of Mukesh and Dinesh be m and d.

One-day efficiency of Mukesh: m = 1/150

Combined one-day efficiency: m + d = 1/120

Substituting value of m, we get

1/150 + d = 1/120

d = 1/120 - 1/150 = (5 - 4)/600 = 1/600

Therefore, Dinesh can do the work in 600 days

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