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Question

A can complete a piece of work in 14 days. He worked for 2 days and remaining work was completed by B in 12 days. If they start the work together, then in what time they can complete the work?

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Solution

A (1 day's) =114 work.
He worked for 2 days, i.e., he completed
(2×114) work =17 work
Remaining work =117=67
B(12days)=67work
B(1days)=67×12=114work
Hence, A + B (1 day's) =114+114=17work
(A + B) can complete the whole work in 7 days.

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