Ratio, Percentage & Commercial Math — practice questions, page 6
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QuestionA sum is invested at compound interest, the interest being credited at the end of every year. The…QuestionA showroom advertises: 'Buy one shirt at the marked price of ₹1200 and get a second shirt at 40%…QuestionA cricket team has won 40% of the 30 matches it has played so far this season, and 20 matches are…QuestionRohan and Sanjay together can paint a hall in 10 days. They work together for 4 days, after which…QuestionA retailer buys books from a publisher at a discount of 30% on the printed price and sells them to…QuestionIn a 500 m race Pooja gives Reema a start of 60 m and still beats her by 40 m. Assuming both run…QuestionOn a sum of ₹64000 lent for 2 years, the compound interest exceeds the simple interest by ₹1000.…QuestionTwo shops sell the same refrigerator, marked at ₹32000 in both. Shop P offers successive discounts…QuestionIn an election between two candidates, 12% of the votes polled were rejected as invalid. The…QuestionTap A alone fills a tank in 20 hours and tap B alone fills the same tank in 30 hours. A is opened…QuestionA trader sells three-fourths of his stock of jackets at a profit of 20% and the remaining…QuestionA train running at 72 km/h crosses a 160 m long train coming from the opposite direction at 54…Question₹18000 is lent at simple interest — at 6% per annum for the first 2 years, at 9% per annum for the…QuestionA wholesaler lists a carton of soap at ₹4800 and allows a trade discount of 25%, plus a further…QuestionA cooperative bank cuts the interest it pays on savings accounts from 4% per annum to 3% per…QuestionIf 8, x and 18 are in continued proportion, the positive value of x is:QuestionA shopkeeper has been selling an article at a profit of 20%. The cost price now falls by 10% while…QuestionTwo towns are 480 km apart. A truck starts from the first town at 6 a.m. at 40 km/h and a car…QuestionHad a certain sum been lent at 3% per annum more than the rate actually used, it would have earned…QuestionA dealer marks his goods 20% above cost price and then allows a discount of 30% on the marked…QuestionWhen 40% of a number is subtracted from 65% of the same number, the result is 84. Half of that…QuestionIn what ratio must water be mixed with milk costing ₹60 per litre so that, selling the mixture at…QuestionA camera sold for ₹8400 gives the dealer exactly as much profit as the loss he would take by…QuestionWithout stoppages a bus averages 54 km/h, and with stoppages it averages 45 km/h. For how many…QuestionKiran deposits ₹40000 in an account paying 10% per annum compound interest. At the end of the…
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