If 36 litres of 20% milk solution is mixed with 48 litres of 10% milk solution, then what will be the percentage concentration of milk in the final solution?
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Correct answer: A
Explanation
The correct answer is Option 1 i.e. 14.28%.
Milk in 36 litres of 20% solution = 36 × = 7.2 litres
Milk in 48 litres of 10% solution = 48 × = 4.8 litres
Total milk = 7.2 + 4.8 = 12 litres
Total solution = 36 + 48 = 84 litres
Percentage of milk = × 100 = 14.28%