railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Time and Work Work Efficiency

A and B together can do a work in 12 days, B and C together can do it in 15 days, C and A together can do it in 20 days. In how many days will A, B and C finish the work if they all work together?

1

20

2

5

3

30

4

10

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