1.

A and B working together can finish certain piece of work in 10 days. If A works at (2)/(3)of his actual efficiency and B works at (5)/(3)of his actual efficiency, then work will be completed in 9 days. If A works at (1)/(2)of his actual efficiency and B works at double of his actual efficiency, then in how many days work will be finished?

Answer»


ANSWER :`8(4)/(7)` DAYS


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