Bunuel wrote:
From a 100 litre container having milk and water in the ratio 8 : 7, 10 litres of solution is removed and replaced with 20 litres of milk. Again 20 litres of solution is removed and replaced with 30 litres of milk. Find the amount of milk in the solution now.
A. 112.5
B. 105.6
C. 93.7
D. 87.5
E.85.6
Let’s first determine the amount of milk and water originally in the container first:
8x + 7x = 100
15x = 100
x = 100/15 = 20/3
So originally, 8(20/3) = 160/3 liters are milk and 7(20/3)
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