Question

A and B together can do a piece of work in 16 days and A alone can do it in 48 days.
How long will B take to complete the work?​

Answer 1

Hence the correct answer is 24days

Refer to the attachment for details...

Hope this helps you

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Answer 2

So in 1 day they can do 1/16 of the work in 1 day. Similarly, A alone will do 1/24 of the work in 1 day. Therefore, B alone can do 1/16 - 1/24 = 1/48 of the work in 1 day, which means that B alone can do the complete work in 48 days.