3. In a mixture of 35 L, the ratio ...
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3. In a mixture of 35 L, the ratio of milk and water is 4:1. If 7 L of water is added to mixture, then the new ratio will be (a) 2:1 (b) 1:2 (c) 3:2 (d) 2:3

11th - 12th Class
Maths
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3. (1) Quantity of water in mixture ( =frac{1}{5} times 35 ) ( =7 mathrm{L} ) ( therefore ) Quantity of water in new mixture ( =7+7=14 mathrm{L} ) and quantity of milk in new mixture ( =28 mathrm{L} ) ( therefore quad ) Required ratio ( =frac{28}{14}=2: 1 )
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