1.

A and B can finish a certain piece of work in 4 days. If A reduces his efficiency by 30% and B increases by 10%, then work will be finished in 5 days. If A works with his original efficiency and B work with 1(1)/(2)times of his efficiency, then in how many days working together work will be finished?

Answer»


ANSWER :`35(5)/(9)`


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