Ratio, Percentage & Commercial Math — practice questions, page 5
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At what rate percent per annum, compounded annually, will ₹6250 amount to ₹7290 in 2 years?Three grades of tea costing ₹120, ₹150 and ₹180 per kg are mixed in the ratio 2 : 3 : 5. The cost…By what percent above the cost price must a dealer mark his goods so that, after allowing a…The number of students in a coaching centre grew by 20% in one year and by a further 25% in the…A boatman rows 30 km downstream in exactly the same time as he takes to row 18 km upstream. If the…A furniture workshop has fixed monthly costs of ₹24000, and every chair it makes costs a further…The present ages of Mahesh and his son are in the ratio 7 : 2. Fifteen years from now their ages…A shop's yearly sales rose from ₹48000 to ₹60000, while its profit rose from 15% of sales to 18%…A sum of money invested at compound interest amounts to ₹4500 in 3 years and to ₹6750 in 6 years.…A suitcase marked at ₹4500 is sold for ₹3645 after two successive discounts at the same rate. Each…The ratio compounded of the duplicate ratio of 4 : 5, the triplicate ratio of 1 : 2 and the…Two athletes start together from the same point of a circular track 400 m round and run in…Naveen sells a table at a profit of 15%. Had he bought it for 20% less and sold it for ₹220 less,…If x is 40% of y and y is 25% of z, then x is what percent of z?A 60-litre drink is made of syrup, juice and water in the ratio 3 : 4 : 5. How many litres of…The monthly turnover of a hardware shop in Indore rose by 20% in April, fell by 25% in May and…Ganesh and Harish each bought a bicycle for ₹6000. Ganesh sold his at a profit of 15%, and Harish…On the first day of each of three successive years Meena deposits ₹10000 in a scheme that pays 8%…Anil and Bimal start a firm with capitals of ₹80000 and ₹120000. Anil manages the business and is…On the way out, a car covers the first half of a 240 km route at 60 km/h and the second half at 40…A phone marked at ₹20000 is offered under two schemes: (i) a flat discount of 20% on the marked…The price of sugar goes up by 60%. By what percent must Sunita cut her consumption so that her…One vessel holds 30 litres of a milk-and-water mixture in the ratio 7 : 3, and another holds 20…A wholesaler sells a machine part to a distributor at a profit of 20%, the distributor sells it to…In a 200 m race Arjun beats Vivek by 20 m, and in a 200 m race Vivek beats Kunal by 25 m. In a 200…
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