1.

P alone can complete a work in 16 days and Q alone can complete the same work in 20 days. P and Q start the work together but Q leaves the work 7 days before the completion of work. In how many days the total work will be completed?

A. 9 ways
B. 14 days
C. 12 days
D. 18 days
Answer» D. 18 days


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