You can fill a 15 gallon tank of gas for $50.81 or buy gas for $3.60/gallon which is the better deal and why ?

Answer 1

You want to compare dollars/gallon which is a division problem...if you divide $50.81 by 15 gallons, it will tell you how much per gallon that deal is -- then you can compare it to the $3.60 per gallon.