A and B can do a piece of work in 45 and 40 days respectively. they began the work together, but A leaves after same days and B finished the remaining work in 23 days. after how many did A ...Read more

A and B can do a piece of work in 45 and 40 days respectively. they began the work together, but A leaves after same days and B finished the remaining work in 23 days. after how many did A leave.

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