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RRB Non Technical Model Papers 10 with solutions

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Question : 15

Total: 100

A and B working together can do a piece of work in 4

hours. B and C working together can do it in 3 hours. C and A working together can do it in 2

hours.
All of them begin the work at the same time. Find out how much time they will take to finish the piece of work.

3 hours
2 hours
2.5 hours
3.25 hours

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