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The Quest for 700: Weekly GMAT Challenge

Each week Manhattan GMAT posts a GMAT question on our blog and follows up with the answer the next day. Are you up for the challenge?

A bathtub has two faucets, P and Q, and one drain.  Faucet P alone can fill the whole tub in ten minutes, and faucet Q alone can fill the whole tub four minutes faster than the drain can empty the whole tub.  With faucets P and Q both running and the drain unstopped, the tub fills in six minutes.  How long would the drain take to empty the whole tub?

(A)   5 5/11 minutes

(B)   6 minutes

(C)   10 minutes

(D)   19 minutes

(E)    30 minutes




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