Question

In a mixture of milk and water, the proportion of water by weight was 75 %. If in the 60 gm mixture, 15 gm water was added, what would be the percentage of water in the new mixture?

• A. 75 %
  
• B. 88 %
  
• C. 90 %
  
• D. 100%
  
• E. None of these

Answer 1

The correct option is E None of these

Here, mixture of milk and water contain 75 % of water by weight.
Then, quantity of water in the mixture
$=60\times \frac{75}{100}$
=45 gm
Now, 15 gm of water is added to the mixture.
Then, quantity of water in the mixture = 45 + 15= 60 gm
$\therefore$ Percentage of water $=\frac{60}{75}\times 100$
=80%