Question 95886
(15/45)*60+x=.75(60+x)
1/3*60+x=45+.75x
20+x=45+.75x
x-.75x=45-20
.25x=25
x=25/.25
x=100 ounces of pure turpentine needs to be added for a 75% solution.proof
20+100=45+(.75*100)
120=45+75
120=120