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Earn 100

6 boys and 4 girls together complete a work in 5 days. The same work is done in 5 days by 10 boys. How many girls would be required if only the girls can finish this work in 5 days?

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Important Questions on Numerical Ability

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A man and a boy can complete digging in 40 days. The ratio of their speed of digging is 8 : 5. How many days the boys alone will take to do this work?
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104 men are employed to complete a work in 56 days working 8 hours per day. After 30 days. 25th work is finished. How many more men should be employed to finish the remaining work within time working 9 hours per day?
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5 persons prepare an admission list in 8 days working 7 hours per day. If two more persons are included to finish the work in 4 days, how much hours per day they should do the work?
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A and B take 15 days and 10 days respectively to complete a job. Both of them together started the job, but after 2 days B have to leave the job due to any reason and the remaining work was finished by A. In how many days the job was completed?
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A work can be finished in 100 days by some persons, but due to the absence of 10 persons, the work is finished in 110 days. How many persons were employed initially?
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The efficiencies of two workmen A and B are in the ratio of 5 : 4. If A can do a piece of work in 12 hours, then B can do it in:
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A pipe can fill a cistern in 12 hours and another pipe can empty completely filled cistern in 18 hours. If both the pipes are opened together, the cistern will be filled in:
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A man travels a certain distance at the rate of 10 km per hour and returns the same point at the rate of 15 km per hour. His average rate for the whole journey is: