In a race of 600m, A can beat B by 60m and in a race of 500m, B can beat C by 50m. By how many metre will A beat C in a race of 400m?

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A boy goes to his school from his house at a speed of 3km/hr and returns at a speed of 2km/hr. If he takes 5 hours in going and coming, the distance between his house and school is-

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The average age of male employers in a firm is 52 years and that of female employees is 42 years. The mean age of all employees is 50 years. The percentage of male and female employees are respectively

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A shopkeeper marks his goods 40% above the cost price. He allows a discount of 5% for cash payment to his customers. He receives ` 1064 after giving the discount.His profit is-

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On a test consisting of 250 questions,Jassi answered 40% of the first 125 questions correctly. What percent of the other 125 questions does she need to answer correctly for her grade on the entire exam to be 60%?

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