Question 347700
1x+.25(10-x)=.40*10
1x+2.5-.25x=4
.75x=4-2.5
.75x=1.5
x=1.5/.75
x=2 oz. of 100% deet is used.
10-2=8 oz. of 10 % deet is used.
Proof:
1*2+.25*8=.40*10
2+2=4
4=4