Question

A, B and C together can do a piece of work in 4 days. A alone can do the same work in 12 days and
B alone can do the same work in 10 days. How long will C take to do the work alone?​

Answer 1

Given,

A, B, C can do a work in 4 days

A can do a work in 12 days

B can do work in 10 days

Asked,

C can do a work in?

Solution,

A and B can work together in,

→ 1/12+1/10

→ 11/60 days

So,

C can do a piece of work in,

→ 1/4 - 11/60

→ 15 days ans.

∴ C can do a piece of work in 15 days

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