A, B and C can complete a piece of work in 4, 20 and 60 days respectively. Working together, they can complete the one third of the same work in how many days?

A, B and C can complete a piece of work in 4, 20 and 60 days respectiv

1.	A, B and C can complete a piece of work in 4, 20 and 60 days respectively. Working together, they can complete the one third of the same work in how many days?
A.	\(2\frac{1}{{19}}\)
B.	\(1\frac{3}{{19}}\)
C.	\(\frac{3}{{19}}\)
D.	\(1\frac{1}{{19}}\)
Answer» E.

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A, B and C can complete a piece of work in 4, 20 and 60 days respectively. Working together, they can complete the one third of the same work in how many days?

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