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2 .A shopkeeper buys 40 bicycles and marks them at 25% above the cost price. He allows a discount of 10% on the marked price for cash sales, and 5% for credit sales. If threefourth of the stock is sold for cash and the rest for credit. If the total profit be ` 20250, then what is the cost price of a bicycle?

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3 .A tradesman given 4% discount on the marked price and gives 1 article free for buying every 15 articles and thus gains 35%. The marked price is above the cost price by â€“

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4 .Nitin borrowed some money at the rate of 6% p.a. for the first three years, 9% p.a. for the next five years and 13% p.a. for the period beyond eight years. If the total interest paid by him at the end of eleven years is ` 8160, then the money borrowed by him was â€“

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5 .Divide ` 6800 into two parts so that S.I. on the first part for 3$1\over 3$ years at 6% p.a. may be equal to the interest on the second part for 3$1\over 2$ years at 4% p.a. First part and second part are â€“

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6 .If the difference between CI and SI on a certain sum at 4% per annum for 2 years is ` 25, find the sum.

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7 .Divide ` 10230 into two parts such that the first part after 10 years is equal to the second part after 7 years, compound interest being 20% per annum. First and second parts are â€“

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8 .10 men or 20 women or 40 children can do a piece of work in 7 months, then 5 men, 5 women and 5 children together can do half of the work in â€“

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9 .A man undertakes to do a certain work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. How many additional men that should be appointed so that the whole work will be finished in time ?

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10 .A and B together can do a piece of work in 30 days, B and C together can do it in 20 days. A starts the work and works on it for 5 days, then B works for 15 days. Finally C finishes the work in 18 days. In how many days can C alone do the work ?

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