Multiple Choice Questions

Ravi can do a piece of work in 30 days while Prakash can do it in 40 days In how many days will they...........

Quantitative Aptitude (PCS) Time and work

Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?

120/7

140/7

130/7

150/7

1/30 + 1/40 = 7/120
120/7 = 17 1/7 day

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