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A refrigerator has a marked price of ₹15,000. It is sold with two successive discounts. If the second discount is 30% and the final selling price is ₹9,000, what is the percentage of the first discount?

A bookseller purchases 8 novels at the marked price of 6 novels from a distributor. If he then sells these novels to customers, offering a discount of 15% on the marked price, what is his profit percentage?

If all three dimensions of a cuboid are increased by 25%, the volume increases by what percentage?

A retailer marked a commodity at 25% above its cost price and then gave a discount. If the sale finally yielded a profit of 20% on the cost price, what was the discount percentage?

A software company developed 1600 licences for a new application at a total cost of ₹80,00,000. They provided 100 licences free to their top beta testers. For the remaining licences they offered a 30% discount on the market price of ₹12,000 per licence, and additionally gave 1 licence free for every 9 licences sold. What is the profit or loss percentage?

The base area of a prism is increased by 35%, while the height remains the same. By what percentage does the volume increase?

A mixture of 200 litres contains acid and water in the ratio 3 : 5. If 40 litres of the mixture is replaced with water, what will be the percentage of acid in the final mixture?

If the selling price of an item is increased by 10% and the profit also increases from 15% to 20%, what is the percentage increase in the cost price?

A man spends 70% of his income. His income increases by 15% and his expenditure by 10%. What is the percentage increase in his savings?

A tank contains 150 litres of liquid, 30% of which is alcohol. If 20 litres of this mixture is replaced by another liquid containing 40% alcohol, what is the percentage of alcohol in the resulting solution?

If the radius of a sphere is increased by 10 percent, by what percentage will its volume increase?

If equal quantities of two types of wheat are mixed, where the first is sold for $₹60/\mathrm{kg}$ at a $25\%$ profit, and the second is sold for ₹36/kg at a 25% loss. If the mixture is sold at ₹48/kg, what is the loss or gain percentage ?

A trader buys 220 mixed stationery boxes at a rate of ₹160 each. He spends ₹1,600 on transportation and packaging. He sells 120 boxes at ₹180 each and the remaining at ₹170 each. What is his total profit percentage?

A person sells two items for ₹800 each. He gains 35% on one and loses 35% on the other. What is his total loss percentage in the entire transaction?

P does $\frac{1}{4}$ of work in 10 days, Q completes $\frac{1}{5}$ of the same in 12 days. Who is more efficient and by what percentage?

As part of the economic reforms initiated in and after 1991, the foreign investment limit in banking was increased to approximately what percentage?

During 1991, India carried out a two-step devaluation of the rupee. What was the approximate total percentage devaluation against the US dollar ?

A shopkeeper offers a 'Buy 4, Get 1 Free' scheme. What is the equivalent single discount percentage?