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Earn 100

A carpenter wants to sell 40 chairs. If he sells them at 156 per chair, he would be able to sell all the chairs. But for every 6 increase in price, he will be left with one additional unsold chair. At what sell­ing price would he be able to maximise his profits (assuming unsold chairs remain with him)?

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Important Questions on Profit & Loss

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A shopkeeper makes a profit of Q% by selling an object for 24. Had the cost price and selling price been interchanged, it would have led to a loss of 62.5Q%. With the latter cost price, what should be the new selling price to get a profit of Q%?
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Find the change in the percentage profit for a fruit vendor who, after finding 20% of the fruits rotten, increased his selling price by 10% over and above 15% that he was already charging?
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Find the selling price of goods if two salesmen claim to make 25% profit each, one calculating it on cost price while another on the selling price, the differ­ence in the profits earned being 100 and selling price being the same in both the cases.
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A shopkeeper calculates percentage profit on the buy­ing price and another on the selling price. What will be their difference in profits if both claim a profit of 20% on goods sold for 3000?
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A pharmaceutical company made 3000 strips of tab­lets at a cost of 4800. The company gave away 1000 strips of tablets to doctors as free samples. A discount of 25% was allowed on the printed price. Find the ratio of profit if the price is raised from 3.25 to 4.25 per strip and if at the latter price, samples to doctors were done away with. (New profit/old profit)
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A merchant makes a profit of 20% by selling an article. What would be the percentage change in the profit percent had he paid 10% less for it and the customer paid 10% more for it?
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An article costing 20 was marked 25% above the cost price. After two successive discounts of the same percentage, the customer now pays 20.25. What would be the percentage change in profit had the price been increased by the same percentage twice successively instead of reducing it?
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Divya goes to buy fruits and after a lot of bargaining is able to get the price of a dozen apples reduced by 1 from the initial price, thereby enabling her to get 1 apple extra for every rupee saved. (Getting no discount on the extra apple). What is the initial price of a dozen apples?