Subject: mathqa
Question: solution p is 20 percent lemonade and 80 percent carbonated water by volume ; solution q is 45 percent lemonade and 55 percent carbonated water by volume . if a mixture of pq contains 75 percent carbonated water , what percent of the volume of the mixture is p ?
Option: 
A: 80 %
B: 40 %
C: 90 %
D: 60 %
Answer: A