Murad can do a piece of work in 33 hours. If he is joined by Joel who is 100% more efficient, in what time will they together finish the work?
Let total work to be done be 33 units.
Murad's efficiency = $$\frac{33}{33} = 1$$ units/hour
Joel's efficiency = $$1 + \frac{100}{100} \times 1 = 2$$ units/hour
=> Murad's and Joel's 1 day's work together = 1 + 2 = 3 units/hour
$$\therefore$$ Time taken by them together = $$\frac{33}{3} = 11$$ hours
=> Ans - (D)
Create a FREE account and get:
