Question 728598
.80X+.30*6=.50(6+X)
.80X+1.8=3+.50X
.80X-.50X=3-1.8
.30X=1.2
X=1.2/.30
X=4 LITERS OF THE 80% SOLUTION IS USED.
PROOF:
.80*4+.30*6=.50(6+4)
3.2+1.8=.5*10
5=5