Math, asked by Mohammad1558, 1 year ago

How much water be added to 14 litres of milk of 90 percent pure milk to have mixture of purity75 percent?

Answers

Answered by BEJOICE
0
Amount of milk in the mixture is
14 \times  \frac{90}{100}  = 12.6 \: liters \\
Let the water to be added is x liters.
Then,
 \frac{12.6}{14 + x}  \times 100 = 75 \\ 1260 = 1050 + 75x \\  x=2.8 \: liters
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