In a mixture of milk and water, the proportion of milk by weight was 80%. If, in a 200-gram mixture, 50 grams of pure milk is added, what would be the percentage of milk in the resulting mixture?
Choose the most appropriate option.
A) 84%
B) 85%
C) 86%
D) 87%
E) 88%
The amount of milk is 0.8(200) + 50 = 210 grams.   The proportion is 210/250= 
<gadget id="calculator">210/250</gadget>
<output>21/25 = around 0.84</output>
0.84 which is 84%   The answer is 84%.
<result>A</result>
In a mixture of milk and water, the proportion of milk by weight was 80%. If, in a 200-gram mixture, 50 grams of pure milk is added, what would be the percentage of milk in the resulting mixture?