A and B can do a piece of work in 12 days, B and C can do it in 15 days and C and A can do the same work in 20 days. Find the number of days in which A alone can do the same job ?

A and B can do a piece of work in 12 days, B and C can do it in 15 day

1.	A and B can do a piece of work in 12 days, B and C can do it in 15 days and C and A can do the same work in 20 days. Find the number of days in which A alone can do the same job ?
A.	20 days
B.	30 days
C.	45 days
D.	60 days
Answer» C. 45 days

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A and B can do a piece of work in 12 days, B and C can do it in 15 days and C and A can do the same work in 20 days. Find the number of days in which A alone can do the same job ?

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