A and B together can complete a work in 10 days. A alone can complete the work in 15 days. If B does the work only half a day daily, then in how many days A and B together will complete the work?

Expert Solution

A and B together can complete a work in 10 days. A alone can complete the work in 15 days. If B does the work only half a day daily,

B’s 1 day’s work = 1/10− 1/15 = 1/30

B’s 1/2 day’s work = 1/60

(A+B) together will complete work in = 1/15 + 1/60 = 1/12 = 12 days

12 days

Nipun Maity answered 2 years ago

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Question

A and B together can complete a work in 10 days. A alone can complete the work in 15 days. If B does the work only half a day daily, then in how many days A and B together will complete the work?

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