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A mobile phone retailer sells a phone for ₹P and makes a profit of 30%. For a special festive offer, he sells the same phone for ₹1.5P. He offers a 10% discount on the offer. What percentage profit will he make during the festive offer?

A shopkeeper marked an item 20% above its cost price. During a sale, he offered a discount of 10%. What was his profit percentage?

A circular disc's radius is decreased by 20%. What is the percentage decrease in its area?

A shopkeeper made a loss of ₹135 on an article. If the loss percentage was 10%, what was the cost price of the article (in ₹)?

A bookseller sells a novel for ₹A and makes a loss of 15%. To clear old stock, he decides to mark the novel at ₹0.8A. He then allows a further discount of 10% on this marked price. What is his overall loss percentage now?

A furniture shop first sells a dining chair for ₹X, thereby making a 25% profit. Later, for a festive period, the marked price of the same chair is raised to ₹1.8X and a discount of 20% is then given on this new marked price. What is the percentage profit earned by the store during the festive sale?

Two containers of the same volume are 30% and 50% full of milk, respectively. They are then filled completely with water. If the contents of both containers are mixed in a larger vessel, what percentage of the mixture is water?

A furniture store sells a chair for ₹Z, making a 20% loss. During a festive season, they increase the marked price of the same chair to ₹2.6Z. They then offer a special discount of 40% on this increased marked price. What will be the percentage profit made by the store during the festive season?

A stationery shop owner buys three types of pencils. The first type costs him 10 pencils for ₹20, the second 3 pencils for ₹9, and the third 9 pencils for ₹45. He mixes them in the ratio 3 : 4 : 3. If he sells all the pencils at 4 for ₹21, what is his approximate gain or loss percentage?

A delivery van travels at a constant speed of 84 km/h to cover a certain route in 1 hour and 45 minutes. If traffic increases the time taken by 15 minutes, by what percentage must the van's average speed decrease to complete the route?

The cost price of an article is ₹200. A shopkeeper sells it at a discount of 20% on the marked price. If the marked price is ₹400, what is the shopkeeper's profit or loss percentage?

The radius of a cone is raised by 25%, while the height is reduced by 10%. What is the percentage change in the volume of the cone?

A pair of shoes is listed at ₹900. After two successive discounts, it is sold for ₹612. If the first discount offered was 20%, what was the second discount percentage?

P and Q can complete a task in 18 days together. P is 20% more efficient than Q. What percentage of the work is done by P alone?

A businessman invests ₹40,000 in buying a bike and spends ₹8,000 on transportation and ₹7,000 on storage. If he sells the bike for ₹60,000, what is the profit or loss percentage?

A triangular field with base 80 m and height 60 m shares a side with a rectangle of length 80 m and breadth 50 m. Find the combined area and the percentage of the triangle's area in the total.

The volume of a sphere is 288π cm³. If the radius of the sphere is tripled, by what percentage does the volume increase?

A seller offers a combo deal: "Buy 4 shirts for the price of 3". If each shirt costs him ₹1,500, what is the effective loss percentage?