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90 litres of a mixture of milk and water contains 20% water. How much water should be added so that the mixture has 28% water ?
Quantity of water = 90*20/100 = 18
18+x/90+x = 28/100
1800+100x = 2520+28x
72x = 720
X = 10 litres
Hence, option 3 is the correct answer.
By: Amit Kumar ProfileResourcesReport error
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