A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the wholeÂ work?

A does 80% of a work in 20 days. He then calls in B and they together

1.	A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the wholeÂ work?
A.	12.5 days
B.	100 days
C.	22.5 days
D.	35 days
Answer» C. 22.5 days

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A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the wholeÂ work?

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