Question

A and B together can do a piece of work in 12 days. B and C together
can do the same in 15 days. If A is twice as fast as C, in how much time
would B alone complete the work?​

Answer 1

Answer:

A and B together can do a work in 12 days. B and C together do it in 15 days. If A's efficiency is twice that of C, then the days 5 required for B alone to finish

Answer 2

Answer:

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