A can do a piece of work in 4 hours, B a...

A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone take to do it? `8\ hou r s` b. `10\ hou r s` c. `12\ hou r s` d. `24\ hou r s`

10 hours

12 hours

8 hours

24 hours

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S CHAND IIT JEE FOUNDATION-TIME AND WORK -Question Bank - 13(a)

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