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Tea or coffe why
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.
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?
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