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A shopkeeper finds that if he increases the selling price of an article by , the profit increases from per cent to per cent. What is the ratio of two selling prices?
(a)
(b)
(c)
(d)
(e)

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Important Questions on Profit, Loss and Discount
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The cost price of pens and calculators is . If the pens are sold at per cent loss and calculators at per cent profit, the total selling price is . Find the CP of each pen

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Ratio of cost price to selling price of an article is
5 : 6. If 20% discount is offered on marked price of article then marked price is what percent more than cost price?

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Some toffees are bought at the rate of for and the same number at the rate of for If the lot is sold at one rupee per toffee, find the gain or loss percent on the whole transaction. (in percentage)

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Ramya purchased an item for and sold it at a loss of per cent. With that amount she purchased another item and sold it at a gain of per cent. What was her overall gain/loss?

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A shopkeeper sells shirts at the rate of per shirt and allows a discount of per cent to all customers buying by full cash payment and for the customers buying shirts at a time he gives free. If a customer is willing to take both the discounts, what net effective discount can he avail?

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The cost price of a calculator is times of its profit. If the shopkeeper earns per cent profit by selling the thing at , then find the original profit in rupees.

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A man sells two clocks for . Cost price of the first clock is equal to the selling price of the second clock.If the first is sold at per cent loss and the second is sold at per cent gain, what is his total loss or gain in rupees?

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A dishonest trader professes to sell rice at cost price using false weights, but he gains per cent. What does he use for weight?
