In Solution P, the proportion of water to alcohol is 4:1. In Solution Q, the proportion of water to alcohol is 2:3. If the two solutions are combined, what is the concentration of alcohol in the new solution if the original solutions were mixed in equal amounts?  Select the correct option.
A) 40% B) 48% C) 50% D) 56% E) 60%
Let V be the total volume of the new solution.   The amount of alcohol added from Solution P is (1/5)*V/2=(1/10)*V   The amount of alcohol added from Solution Q is (3/5)*V/2=(3/10)*V   The total amount of alcohol in the new solution is (1/10+3/10)*V=(2/5)*V   The alcohol concentration is 2/5=40%   The answer is 40%.
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In Solution P, the proportion of water to alcohol is 4:1. In Solution Q, the proportion of water to alcohol is 2:3. If the two solutions are combined, what is the concentration of alcohol in the new solution if the original solutions were mixed in equal amounts?