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At room temperature (~20°C), speed of sound in air is around 343 m/s. This speed increases in solids and liquids and decreases at higher altitudes. It is much slower than light, which travels at 3 × 108, m/s. That's why we see lightning before hearing thunder.
P purchased a book from registered store and gets 20% discount while Q purchased the same book from a roadside stall and got 24% discount. If Q paid Rs....
Selling price of article ‘A’ when sold at a profit of 50% is Rs. 180 more than its selling price when sold at a loss of 40%. If the cost price of ar...
Amazon allows 15% discount to his customers and still earn 19% profit. If the production cost of the product is increased by 12% therefore Amazon issued...
A trader sells two chains for Rs. 4100 each, neither losing nor gaining in all. If he sold one of the chains at a gain of 25%, the other was sold at a ...
12% more is gained by selling a shirt for Rs. 4190 than by selling it for Rs. 3782. Find the cost price of the shirt.
A man purchase some lemons @ 1 lemon for Rs. 2 and same number of lemons @ 2 lemons for Rs. 1 and he sells all of them @ 4 lemons for Rs. 3. Find his pr...
A shopkeeper marks an article at 40% above the cost price and gives a discount of 20%. If the cost price of the article is ₹500, find the profit.
A shopkeeper marked an article P% above its cost price and sold it for Rs. 1150 after giving a discount of 20%. If the shopkeeper had a loss of 8% on th...
A bought an article at 12% less of the marked price and sold it at 10% more than the marked price. Find the profit earned by him.
Each of the articles is marked 80% above its cost price and a 30% discount was given on it while selling. The selling price of article A is Rs. 126 less...
