P can do a piece of work in 36 days. If Q is 50% more efficient than P, then in how many days can Q do the same work?
P can do a piece of work in 36 days.
Now, Q is 50% more efficient than P, => P will take 50% more time than Q to finish the same work.
=> Days required by Q = $$\frac{36}{(100+50)}\times100$$
= $$\frac{36}{3}\times2=24$$ days
=> Ans - (B)
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