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Answer:
1).If A is 20% less than B, then B is 20% more than A.
2).Let x be the original price of rice per kg. After the 10% reduction, the price becomes 0.9x. A person can purchase 10 kg more rice in 1400, meaning he can purchase (10 + 10) = 20 kg in 1400. We can set up an equation: 20 * 0.9x = 20 * x - 1400. Solving for x, we get x = 1400 / 0.9 = 1555.56. Hence, the original price of rice per kg is 1555.56 and the reduced price is 1400 / 20 = 70.
3). If Rama's marks are 34% of the total marks, then 100% of the total marks is equal to 204 / (34/100) = 600. Sophia's marks are 212, so her percent of the total marks is (212 / 600) * 100 = 35.33%.
4). If a man purchased 72 oranges for 1 dozen, then the cost per orange is 12 / 72 = 0.17. To get a 20% profit, he must sell each orange for 0.17 * 1.2 = 0.204. Hence, he should sell each orange for 0.204 * 100 = 20.4 per 100 oranges.
5). Ahmed spent ₹50,000 to repair the car, so the selling price must be ₹2,50,000 + ₹50,000 = ₹3,00,000. Ahmed sold the car at a profit of 8%, meaning the selling price was 3,00,000 * (1 + 8/100) = ₹3,24,000.
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