ABC-
8:6
XYZ-
14:11.20
ABC (unit rate)-
Divide both sides by 8...
1:0.75
XYZ (unit rate)-
Divide both sides by 14...
1:0.80
ABC is less, 0.80>0.75. The difference between the two is 0.05; 0.80-0.75=0.05.
So the answer is:
3. ABC is less expensive by $0.05 per pound.