有關f2既maths問題－ppi93gk88d的部落格

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有關f2既maths問題

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1) Last year, the marked price and the selling price of a new digital camera were $7200 and $6120 respectively. But this year the marked price and the selling price are adjusted to $6400 and $5600 respectively. In comparing the discount per cent of these two years, which one is greater? a) discount per cent... 顯示更多 1) Last year, the marked price and the selling price of a new digital camera were $7200 and $6120 respectively. But this year the marked price and the selling price are adjusted to $6400 and $5600 respectively. In comparing the discount per cent of these two years, which one is greater? a) discount per cent last year ? b) discount per cent this year ? 2) A computer game software marked at $280 is sold at 20% off. If the discount is 35% of its cost price, find the profit per cent.

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1)Last year, the marked price and the selling price of a new digital camera were $7200 and $6120 respectively. But this year the marked price and the selling price are adjusted to $6400 and $5600 respectively. In comparing the discount per cent of these two years, which one is greater? a) discount per cent last year = (7200 – 6120)/7200 * 100% = 15% b) discount per cent this year = (6400 – 5600)/6400 * 100% = 12.5% The discount percent last year is greater 2) A computer game software marked at $280 is sold at 20% off. If the discount is 35% of its cost price, find the profit per cent. The discount is $280 * 20% = $56 The selling price is $280 - $56 = $224 The cost price = $56 / 35% = $160 The profit percent = (224 – 160)/160 * 100% = 40%

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