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

A can do a piece of work in 15 days and B in 20 days. If they together

1.	A can do a piece of work in 15 days and B in 20 days. If they together work on it for 4 days, then the fraction of the work that is left is:
A.	\(\frac{1}{4}\)
B.	\(\frac{7}{15}\)
C.	\(\frac{8}{15}\)
D.	\(\frac{8}{10}\)
Answer» D. \(\frac{8}{10}\)

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

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