cano wrote:

Frances can complete a job in 12 hours, and Joan can complete the same job in 8 hours. Frances starts the job at 9 a.m., and stops working at 3 p.m. If Joan starts working at 4 p.m. to complete the job, at what time is the job finished?

A. 6 p.m.

B. 7 p.m.

C. 8 p.m.

D. 10 p.m.

E. 12 p.m.

Let the total work be 24 units.

Frances can complete 2 units/hr

Joan can complete 3 units/hr

**Quote:**

Frances starts the job at 9 a.m., and stops working at 3 p.m.

Work done by Frances in 6 hours is 12 units ; work left for Joan is 12 units ( 24 - 12)

Time required by Jones to complete the remaining work will be 12/2 => 6 hours

Given Jones starts at 4PM , so she would complete the work at 10 PM

Answer will be (C)
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Thanks and Regards

Abhishek....

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