1.

A and B can do a piece of work in 12 days. B and C can do it in 15 days. A and C can do it in 20 days . how many days will A take to finish the same work ?​

Answer»

Answer:

A,B and C can together finish 1/10th of the WORK in 1 day. ∴ A ALONE can do it in 30 days.

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