Victor needs to calculate the number of miles per gallon his car averages. His car's gas tank holds 15 gallons of gas. Write an equation that will help him determine the average number of miles his car gets per gallon of gas.

miles/gallons = x

m/15 = mpg

To determine the average number of miles per gallon his car gets, Victor can use the following equation:

Average Miles per Gallon = Total Miles Driven / Total Gallons of Gas Used

In this case, Victor needs to calculate the number of miles per gallon his car averages, given that his car's gas tank holds 15 gallons of gas. So, the equation can be modified as follows:

Average Miles per Gallon = Total Miles Driven / 15 gallons

To find the total miles driven, Victor can provide the actual number. Once he has the total miles driven value, he can substitute it into the equation to calculate the average miles per gallon.