1.

A can finish \(\frac 3 5\) of a task in 6 days and B can finish \(\frac 2 3\) of the same task in 12 days. A and B worked together for 5 days. C alone completed the remaining task in 8 days. B and C, working together, will complete the same task in:

A. 10 days
B. 18 days
C. 12 days
D. 15 days
Answer» D. 15 days


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