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Percentage Practice Questions - Page 5

Questions 41–49 of 49 · Page 5 of 5

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Questions
49
Solutions
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Q41Sudhir, a very clever businessman, started off a business with very little capital. In the first year, he earned a profit of 50% and donated 50% of the total capital (initial capital + profit) to a charitable organization. The same course was followed in 2nd and 3rd year also. At the end of three years, he is left with RS. 33,750, then find the amount donated by him in the 2nd year.MediumSolve →Q42In an examination, 40% students failed in Physics and 32% students in Chemistry, 20% students failed in both the subjects. If the number of students who passed the examination was 960 (by passing both the subjects), how many students appeared in the examination consisting only of these two subjects?MediumSolve →Q43The price of soap is collectively decided by five factors: raw materials, research, labour, advertisements and transportation. Assume that the functional relationship is Price of soap = (k’ × Raw material costs × Research costs × labour costs × Advertising cost × Transportation cost). If there are respective changes of 20%, 20%, -20%, 25% and 10% in five factors, then find the percentage change in the price of soap.MediumSolve →Q44The price of a certain product was raised by 20% in indi(a) The consumption of the same article was increased from 400 tons to 440 tons. By how much percent will the expenditure on the article rise in the Indian economy?MediumSolve →Q45In the university examination last year, Samanyu scored 65% in English and 82% in History. What is the minimum percentage he should score in Sociology, which is out of 50 marks (if English and history were for 100 marks each), if he aims at getting 78% overall?MediumSolve →Q4610% of Mexico’s population migrated to South Asia, 10% of the remaining migrated to America and 10% of the rest migrated to Australia(a) If the female population, which was left in Mexico, remained only 3,64,500, find the population of Mexico City before the migration and its effects if it is given that before the migration the female population was half the male population and ratio did not change after the migration?MediumSolve →Q47A village lost 12% of its goats in a flood and 5% of remainder died from diseases. If the number left now is 8360, what was the original number before the flood?MediumSolve →Q48The cost of food accounted for 25% of the income of a particular family. If the income gets raised by 20%, then what should be the percentage point decrease in the food expenditure as a percentage of the total income to keep the food expenditure unchanged between the two years?MediumSolve →Q49Aman’s salary was first increased by 25% and then decreased by 20%. The result is the same as Baman’s salary increased by 20% and then reduced by 25%. Find the ratio of Baman’s initial salary to that of Aman’s initial salary.MediumSolve →
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