Ratio, Percentage & Commercial Math — practice questions, page 2
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A sum of money amounts to ₹9261 in 3 years at 5% per annum compound interest. The sum (in ₹) is:A salary is increased by 10%, then by a further 20%, and is finally decreased by 25%. The net…A shop offers a 'buy 3, get 1 free' scheme on identical items. The effective discount is what…Walking at 5 km/h a man reaches his office 10 minutes late; walking at 6 km/h he arrives 5 minutes…₹8500 is divided among A, B and C so that A gets two-thirds of what B gets, and B gets one-fourth…In a class, 60% of the students play cricket, 40% play football and 20% play both. The percent of…A is twice as efficient as B, and together they finish a piece of work in 12 days. A alone would…Two trains of equal length running in the same direction at 46 km/h and 36 km/h cross each other…The average weight of A, B and C is 45 kg. If the average weight of A and B is 40 kg and that of B…A 40-litre mixture contains milk and water in the ratio 3 : 1. How many litres of water must be…₹4700 is divided among Aarti, Bikram and Chandni so that 3 times Aarti's share, 4 times Bikram's…Ravi saves 20% of his monthly income. The next year his income goes up by 25% while his…Mohit's profit on an article equals 25% of its cost price. His profit expressed as a percent of…₹20000 is invested for 3 years at compound interest, the rate being 10% in the first year, 15% in…Vikas takes 40 seconds to walk up a stationary escalator, and 60 seconds to reach the top when he…A jacket was sold for ₹4275 after a 10% discount on the marked price and a further 5% off the…The boys and girls in a hobby club are in the ratio 7 : 5. If 8 boys leave the club and 4 girls…A student was asked to find 5/8 of a number. By mistake he found 8/5 of it, and his answer was 351…A grocer marks his goods 20% above cost price, allows a discount of 10% on the marked price, and…Two trains, 137 m and 163 m long, run towards each other on parallel tracks. One of them runs at…The difference between the compound interest and the simple interest on ₹10000 for 3 years at 10%…A pipe can fill an empty tank in 6 hours, but because of a leak at the bottom the tank takes 9…While measuring the side of a square plot, a surveyor makes an error of 10% in excess. The…On a jacket marked at ₹4000, Shop A offers two successive discounts of 25% and 15%, while Shop B…A boat that rows at 12 km/h in still water takes twice as long to go 40 km upstream as it takes to…
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