# A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it?

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Then, if we subtract 4 by 2 , then we get the result 2.

So, C alone can do a work in 2 hours.

But, B together with C can do any work in = 3 hours

Then, B alone =(3+2) hours

Answer: B