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 67.5 % percent carbonated water , what percent of the volume of the mixture is p ?
"67.5 % is 12.5 % - points below 80 % and 12.5 % - points above 55 % . so the ratio of solution p to solution q is 1 : 1 . mixture p is 1 / 2 = 50 % of the volume of mixture pq . the answer is c ."
multiply(divide(subtract(divide(67.5, const_100), divide(55, const_100)), add(subtract(divide(67.5, const_100), divide(55, const_100)), subtract(divide(80, const_100), divide(67.5, const_100)))), const_100)