A can do a work in 15 days and 6 in 20 days. If they work on it together for 4 days, then what is the fraction of the work that is left?

A can do a work in 15 days and 6 in 20 days. If they work on it togeth

1.	A can do a work in 15 days and 6 in 20 days. If they work on it together for 4 days, then what is the fraction of the work that is left?
A.	\[\frac{1}{4}\]
B.	\[\frac{1}{10}\]
C.	\[\frac{7}{15}\]
D.	\[\frac{8}{15}\]
Answer» E.

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A can do a work in 15 days and 6 in 20 days. If they work on it together for 4 days, then what is the fraction of the work that is left?

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