1.

A can do a certain work in 25 days which B alone can do in 20 days. A stared the work and was joined by B after 10 days. The work was completed in

A. 15 1/3 days
B. 18 2/3 days
C. 16 2/3 days
D. 14 1/3 days
Answer» D. 14 1/3 days


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