Alligation or Mixture problems
6 liters of milk and water mixture has 75% milk in it. How much milk should be added to the mixture to make it 90% pure?

8 liters
12 liters
9 liters
10 liters

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Alligation or Mixture problems
From a container, 6 liters milk was drawn out and was replaced by water. Again 6 liters of mixture was drawn out and was replaced by the water. Thus the quantity of milk and water in the container after these two operations is 9:16. The quantity of mixture is:

15
16
25
31

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Alligation or Mixture problems
Manideep purchases 30kg of barley at the rate of 11.50/kg and 20kg at the rate of 14.25/kg. He mixed the two and sold the mixture in the shop. At what price per kg should he sell the mixture to make 30% profit to him?

14.92
15.84
16.38
13.98

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