A does 4/5th of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

A does 4/5th of a work in 20 days. He then calls in B and they toge

1.	A does 4/5th of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?
A.	23 days
B.	37 days
C.	37 ½ days
D.	40 days
Answer» D. 40 days

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A does 4/5th of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

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