A and B can do a work in 10 days and 15 days, respectively. They worked together for 5 days, then B left the work, and A alone did the remaining work....

Question

A and B can do a work in 10 days and 15 days, respectively. They worked together for 5 days, then B left the work, and A alone did the remaining work. The whole work got completed in:

Options

A.

6

23\frac{2}{3}
days

B.

7 days

C.

7

12\frac{1}{2}
days

D.

6

12\frac{1}{2}
days

work efficiencycombined worklogical deductioncuet 2023

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