Ratio, Percentage & Commercial Math — practice questions, page 8
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QuestionAn air-cooler is sold at a discount of 10% on its marked price, and GST of 18% is then charged on…QuestionAllowing a discount of 25% on the marked price of a mixer still leaves a shopkeeper a profit of…QuestionA cyclist has 60 km to cover. If he could raise his speed by 5 km/h he would get there one hour…Question₹12000 is invested for two years with interest compounded annually. The rate for the first year is…QuestionThree friends put ₹a, ₹b and ₹c into a common fund. Taken in pairs their contributions satisfy (a…QuestionA wholesale club charges a membership fee of ₹1200 a year and then sells every item at 8% below…QuestionA stationery shop's monthly sales revenue went up by 20% while the number of items it sold in the…QuestionTwo trains of the same length take 10 seconds and 15 seconds respectively to run past a signal…QuestionA trader cheats at both ends. Buying, he pays for 1 kg but takes away 1080 g; selling, he charges…QuestionA furniture shop marks a bed at ₹24000 and takes 15% off that price, but then adds a fixed…QuestionThe average weight of the eight rowers in a boat goes up by 1.5 kg when a new rower replaces one…QuestionTwo equal sums of money are lent on the same day, one at 8% per annum simple interest for 5 years…QuestionFresh grapes contain 80% water by weight and dry grapes contain 20% water. From 60 kg of fresh…QuestionWalking at three-fourths of his usual speed, Manav reaches his office 15 minutes later than he…QuestionA fruit-seller buys mangoes at 6 for ₹50 and sells them at 5 for ₹60. His profit percent is:QuestionTwo brothers each invest ₹25000 for three years — one at 12% per annum simple interest, the other…QuestionSix men or nine women can plough a field in 12 days. Four men and six women working together will…QuestionEven after allowing two successive discounts of 20% and 10% on the marked price, a dealer makes a…QuestionIn a hostel 30% of the residents are vegetarian. If 20 more residents join and every one of them…QuestionA dealer marks a chair at ₹2000 and sells it at a discount of 10%, paying his salesman a…QuestionA dairy keeps two tanks. Tank X holds 45 litres of a milk-and-water mixture in the ratio 8 : 1,…QuestionThe length of a rectangular sugarcane field is increased by 30%. By what percent must its breadth…QuestionA stationer buys 500 wall calendars at ₹40 each. He sells 300 of them in December at 20% below…QuestionA cooperative society offers 8% per annum compounded half-yearly, while a small bank next door…QuestionA tile depot's board reads: 'Buy 5 tiles, get 2 tiles free.' A customer who takes full advantage…
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