Question
The ratio of quantity of milk and water in a 400 litres
mixture is 7:3, respectively. On removing 'M' litres of mixture the difference between the quantities of milk and water becomes 70 litres. Find the value of 'M'.Solution
ATQ, After removing 'M' litres of mixture, let quantity of milk and water left be 7x litres and 3x litres, respectively. According to the question, 7x - 3x = 70 Or, 4x = 70 Or, 'x' = 70 / 4 = 17.5 Therefore, after removal of 'M' litres of mixture, quantity of mixture left = 7x + 3x = 10x = 10 * 17.5 = 175 litres Therefore, 'M' = 400 - 175 = 225
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