Question 157252
x+.3(2.5-x)=.44*2.5
x+.75-.3x=1.1
.7x=1.1-.75
.75x=.35
x=.35/.7
x=.5 gallons of 100% antifreeze is needed.
2.5-.5=2 gallons of 30 % antifreeze is needed.
Proof:
.5+.3*2=1.1
.5+.6=1.1
1.1=1.1