If 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in:
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1
Discuss

A completed \(\frac{7}{{10}} \)of work in 15 days, then he completed the remaining work with the help of B in 4 days. In how many days A and B can complete the entire work together?
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2
Discuss

A can do a work in 15 days and B in 20 days. If they together work on it for 4 days, what fraction of the work will be left ?
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3
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If 4 men or 6 women can do a piece of work in 12 days working 7 hours a day, how many days will it take to complete a work twice as large with 10 men and 3 women working together 8 hours a day ?
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4
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A sum of money is sufficient to pay A's wages for 21 days and B's wages for 28 days. The same money is sufficient to pay the wages of both for ?
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5
Discuss

If 20 women can lay a road of length 100m in 10 days. 10 women can lay the same road of length 50m in = ?
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6
Discuss

A does half as much work as B in one sixth of the time.If together they take 10 days to complete a work, how much time shall B take to do it alone?
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7
Discuss

16 men can finish a work in 24 days and 48 boys can finish the same work in 16 days. 12 men started the work and after 4 days 12 boys joined them. In how many days can they finish the remaining work ?
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8
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A and B can together finish a piece of work in 30 days. They worked on it 20 days and then B left. The remaining work was done by A alone in 20 days. A alone can finish the work in = ?
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9
Discuss

A and B undertake a piece of work for Rs. 250. A alone can do that work in 5 days and B alone can do that work in 15 days. With the help of C, they finish the work in 3 days. If every one gets paid in proportion to work done by them, the amount C will get is ?
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10
Discuss

A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:
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