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A can do 1 3 of the work in 5 days and B can do 2 5 of the work in 10 days. In how many days both A and B together can do the work?

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Important Questions on Time and Work

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A, B and C can do a piece of work in 6, 12 and 24 days respectively. They altogether will complete the work in :
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A, B and C contract a work for Rs.550. Together A and B are to do 7 11 of the work. The share of C should be:
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A and B finish a job in 12 days while A, B and C can finish it in 8 days. C alone will finish the job in :
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12 men can complete a work in 8 days. Three days after they started the work, 3 more men joined them. In how many days will all of them together complete the remaining work?
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Mahesh and Umesh can complete a work in 10 and 15 days respectively. Umesh starts the work and after 5 days Mahesh joins him. In all, the work would be completed in:
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Sunil completes a work in 4 days whereas Dinesh completes the work in 6 days. Ramesh works 1 1 2 times as fast as Sunil. How many days it will take for the three together to complete the work?
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A can complete a work in 6 days and B in 5 days. They work together, finish the job and receive Rs.220 as wages. B 's share should be :
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12 men and 8 children can finish a piece of work in 9 days. If each child takes twice the time taken, by a man to finish the work, in how many days will 12 men finish the same work?