Question

A and B can do a piece of work in 10 and 15 days respectively. In how many days will they
finish the work if they work together?
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Answer 1

Answer:

A can do a piece of work in 10 days ;

B can do a piece of work in 15 days ;

If A and B can do work together , they will complete the work in : ?

They will take maximum 5 days.