A dishonest milkman professes to sell his milk at C.P. but he mixes it with water and thereby gains 25%. What is the percentage of water in the mixture?
Every liter of pure milk he needs to sell for 1 / 1.25 = 0.8 liter.
He then needs to supplement it to 1 liter. Therefore the milk he sells is 0.8 l milk and 0.2 l water.
5 litres of HCL is added to 15 litre of a solution containing 40% of DI water.
What is the percentage of DI water in the new mixture?
A mixture contains milk and water in the ratio 5 : 1. On adding 5 liters of water, the ratio of milk and water becomes 5 : 2. What was the quantity of milk in the original mixture?
What will be the percentage of profit, if a shopkeeper provides a discount of 25% after increasing the price of an object by 50%?
Neeraj buys an old piano for Rs. 6800 and spends Rs. 1200 to repair it.
If he sells the piano for Rs. 8600, what is his gain percentage?