Question
100 litres of a mixture contains 40% milk and rest
water. If ‘x’ litres of milk is added into the mixture then quantity of water in the final mixture becomes 25% of total quantity of mixture. Find the value of ‘x’.Solution
Quantity of milk in the initial mixture = 100 × 0.40 = 40 litres Quantity of water in the initial mixture = 100 – 40 = 60 litres Quantity of water is unchanged in the final mixture. So, Quantity of final mixture = (60/25) × 100 = 240 litres Quantity of milk in final mixture = 240 – 60 = 180 litres Value of ‘x’ = 180 – 40 = 140
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