If A and B together can finish a piece of work in 20 days, B and C in 10 days and C and A in 12 days, then A, B, C jointly can finish the same work in

If A and B together can finish a piece of work in 20 days, B and C

1.	If A and B together can finish a piece of work in 20 days, B and C in 10 days and C and A in 12 days, then A, B, C jointly can finish the same work in
A.	5 : 3
B.	5 : 2
C.	7 : 4
D.	7 : 3
Answer» C. 7 : 4

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If A and B together can finish a piece of work in 20 days, B and C in 10 days and C and A in 12 days, then A, B, C jointly can finish the same work in

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