A does 30% of a work in 30 days. He then calls in B and they together finish the remaining work in 20 days. How long B alone would take to do the wholeÂ work?

A does 30% of a work in 30 days. He then calls in B and they together

1.	A does 30% of a work in 30 days. He then calls in B and they together finish the remaining work in 20 days. How long B alone would take to do the wholeÂ work?
A.	40 days
B.	80 days
C.	120 days
D.	20 days
Answer» B. 80 days

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A does 30% of a work in 30 days. He then calls in B and they together finish the remaining work in 20 days. How long B alone would take to do the wholeÂ work?

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