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A and B can do a work in 12 days, B and ...

A and B can do a work in 12 days, B and C can do the same work in 15 days & C and A can do it in 20 days. In how many days they can do it separately?

A

30, 20, 60

B

20, 30, 60

C

60, 20, 30

D

15, 45, 30

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The correct Answer is:
A
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