Question 75045
.15x+.05*30=.10(x+30)
.15x+1.5=.10x+3
.15x-.10x=3-1.5
.05x=1.5
x=1.5/.05
x=30 oz. of 15% saline solution is needed.
proof
.15*30+.05*30=.10(30+30)
4.5+1.5=.10(60)
6=6