P is three times as fast as Q and working together, they can complete a work in 14 days. In how many days can Q alone complete the work? Choose the correct choice from the following answers
A) 18 1/2 days  B) 17 1/2 days  C) 19 1/2 days  D) 14 1/4 days  E) 10 1/2 days
P = 3Q   P + Q = 3Q + Q = 4Q   These 4Q people can do the work in 14 days, which means Q can do the work in 48 days.   Hence, P can do the work in 18 1/2 days.   18 1/2 daysnswer:18 1/2 days
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P is three times as fast as Q and working together, they can complete a work in 14 days. In how many days can Q alone complete the work?