1.

P and Q can together do a work in 6 days. If P can do the work alone in 18 days, then P is:1). As efficient as Q2). Half as efficient as Q3). Twice as efficient as Q4). Thrice as efficient as Q

Answer»

<P>P’s 1 DAY work = 1/18

(P + Q)’s 1 day work = 1/6

Q’s 1 day work = 1/6 – 1/18 = 1/9

Hence, Q can alone do the work in 9 days

∴ P is half as efficient as Q


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