The proportion of water to alcohol in Solution A is 5:1 and the proportion of water to alcohol in Solution B is 2:3. If an equal amount of each solution is mixed together, what is the concentration of alcohol in the new solution? Choose one:	A) 36.7%	B) 37.6%	C) 38.3%	D) 39.8%	E) 40.5%
Let V be the total volume of the new solution.   Then a volume of V/2 was added from each solution A and B.   The amount of alcohol added to the new solution was:   (1/6)(V/2)+(3/5)(V/2)=V/12+3V/10=23V/60.   The concentration of alcohol is 23/60=38.3%   The answer is 38.3%.
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The proportion of water to alcohol in Solution A is 5:1 and the proportion of water to alcohol in Solution B is 2:3. If an equal amount of each solution is mixed together, what is the concentration of alcohol in the new solution?