Question
In container P, there is 115 litres of milk and in
container Q there is 50 litres of water. 30% of milk and 60% of water is taken out from the respective containers and are mixed in container R. How much water should be added to container R such that the ratio of milk to water becomes 3:4?Solution
Quantity of milk in container R = 0.30 × 115 = 34.5 litres Quantity of water in container R = 0.60 × 50 = 30 litres Let x litres of water is added to the container R. According to the question, 34.5/(30 + x) = 3/4 Or, 138 = 90 + 3x Or, 3x = 48 Or, x = 16 Therefore, water added to container R = 16 litres
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