Question 353926
.65X+.15(10-X)=.50*10
.65X+1.5-.15X=5
.50X=5-1.5
.50X=3.5
X=3.5/.50
X=7 LITERS OF THE 65% SOLUTION IS USED.
10-7=3 LITERS OF THE 15% SOLUTION IS USED.
PROOF:
.65*7+.15*3=.50*10
4.55+.45=5
5=5