A alone can complete a task in 3 days, B alone can complete the same task in 7 days. If A and B work together for 2 days, what fraction of the task will be left?

A alone can complete a task in 3 days, B alone can complete the same t

1.	A alone can complete a task in 3 days, B alone can complete the same task in 7 days. If A and B work together for 2 days, what fraction of the task will be left?
A.	\(\frac{2}{{21}}\)
B.	\(\frac{1}{7}\)
C.	\(\frac{4}{{21}}\)
D.	\(\frac{1}{{21}}\)
Answer» E.

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A alone can complete a task in 3 days, B alone can complete the same task in 7 days. If A and B work together for 2 days, what fraction of the task will be left?

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