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Prashant and Raghav can complete a work in days and days respectively while Umesh can destroy it in days. In how many days, the work would be completed?
(a) days
(b) days
(c) days
(d) days
(e)None of these

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Important Questions on Ratio and Proportion
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G is twice as fast as S in doing work. If G can do a work in days less than S, how many days will they take to complete the work together?
1.
2.
3.
4.

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Ten people can do a work in days. In how many days, can 15 people complete double the work -
1.
2.
3.
4.

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HARD

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HARD

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A and B working alone can do a work in days and days respectively. They started the work together but B left after sometime and A finished the remaining work in days. Find after how many days from start B left the work?

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