A can do a work in 20 days and B in 5 days. If they work on it together for 3 days, then what fraction of work is left?

A can do a work in 20 days and B in 5 days. If they work on it togethe

1.	A can do a work in 20 days and B in 5 days. If they work on it together for 3 days, then what fraction of work is left?
A.	1/2
B.	3/4
C.	4/5
D.	1/4
Answer» E.

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A can do a work in 20 days and B in 5 days. If they work on it together for 3 days, then what fraction of work is left?

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