Latest Wipro Aptitude Question SOLUTION: A can do a piece of work n 7 days of 9 hours each and B alone can do it in 6 days of 7 hours each. How long will they take to do it working together 8 2/5 hours a day?

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A can do a piece of work n 7 days of 9 hours each and B alone can do it in 6 days of 7 hours each. How long will they take to do it working together 8 2/5 hours a day?

Asked In Wipro (12 years ago)

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siva  (11 years ago)

A can complete the work in (7*9)=63hours.
B can complete the work in (6*7)=42 days.
A's 1 hours work=1/63 and B's 1 hours work=1/42.
(A+B)'s 1 hours work=(1/63+1/42)=5/126.
Both will finish the work in (126/5)hours.
Number of days of 8 2/5 hours each=(126/5*5/42)=3days.

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sbalajisathya  (11 years ago)

3 days..

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