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

If the work done by (x  1) men in (x + 1) days and the work done by (x + 2) men in (x  1) days are in the ratio 9 : 10, then the value of x is equal to ?
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2
Discuss

4 matweavers can weave 4 mats in 4 days. At the same rate how many mats would be woven by 8 matweavers in 8 days ?
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3
Discuss

If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?
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4
Discuss

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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5
Discuss

Three pipes A,B and C attached to a cistern. A can fill it in 10 min, B in 15 min, C is a waste pipe for emptying it. After opening both the pipes A and B, a man leaves the cistern and returns when the cistern should have been just full. Finding, however, that the waste pipe had left open, he closes it and the cistern now gets filled in 2 min. In how much time the pipe C, if opened alone, empty the full cistern?
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6
Discuss

P is thrice as good a workman as Q and together they finish a piece of work in 24 days. The number of days taken by P alone to finish the work is:
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7
Discuss

If the expenditure of gas on burning 6 burners for 6 hours a day for 8 days is Rs. 450, then how many burners can be used for 10 days at 5 hours a day for Rs. 625 ?
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8
Discuss

A can write 75 pages in 25 hours. A and B together can write 135 pages in 27 hours. In what time can B write 42 pages ?
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9
Discuss

A takes 10 days less than the time taken by B to finish a piece of work. If both A and B can do it in 12 days, then the time taken by B alone to finish the work is = ?
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10
Discuss

The daily wages of A and B respectively are Rs. 3.50 and Rs. 2.50. When A finishes a certain work, he gets a total wage of Rs. 63. When B does the same work, he gets a total wage Rs. 75. If both of them do it together what is cost of the work ?
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