A does 60% of a work in 15 days. He then calls B, and they together finish the remaining work in 5 days. How long B alone would take to do the whole work?

A does 60% of a work in 15 days. He then calls B, and they together fi

1.	A does 60% of a work in 15 days. He then calls B, and they together finish the remaining work in 5 days. How long B alone would take to do the whole work?
A.	25 days
B.	20 days
C.	80 days
D.	24 days
Answer» B. 20 days

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A does 60% of a work in 15 days. He then calls B, and they together finish the remaining work in 5 days. How long B alone would take to do the whole work?

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