Question

A and b together can do a piece of work in 15 days , but b alone can do it 60 days. How many days b alone take to do same work.

Answer 1

The correct answer of the question is ;

(A+B) one day work =1/15

B one day work =1/60

Therefore A will do same work in days = 1/15 - 1/60 =3/60 =60/3 =20 days

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