64 ounces of Gatorade for $3.00
120/64 is 1.875. You then multiply that number with $3.00. This gives you the amount needed to pay for 120 ounces of Gatorade, which is $5.63.
So comparing $5.63 with the $7.49, this shows that 64 ounces of Gatorade is the better deal since it’s cheaper.