A and B can do a piece of work in 12 days. B and C in 15 days and C and A in 20 days. If A, B and C work together, they will completer the work in :

A and B can do a piece of work in 12 days. B and C in 15 days and C an

1.	A and B can do a piece of work in 12 days. B and C in 15 days and C and A in 20 days. If A, B and C work together, they will completer the work in :
A.	5 days
B.	$$ 7{5 over 6} days$$
C.	10 days
D.	$$ 15 {2 over 3} days$$
Answer» D. $$ 15 {2 over 3} days$$

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A and B can do a piece of work in 12 days. B and C in 15 days and C and A in 20 days. If A, B and C work together, they will completer the work in :

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