5 gallons of gas last 100 miles. How many miles per gallon

20

Step-by-step explanation:

100/5 = 20

Answer: 20 miles per gallon.

Step-by-step explanation: All you simply need to do is to find how many miles is 1 gallon of gas.

Step 1: Divide 5 gallons by 5 5 divided by 5 = 1 gallon of gas

Step 2: Divide 100 miles by 5 100 divided by 5 = 20 miles

Step 3: 1 gallon equals 20 miles.

So, for every 1 gallon of gas, you will travel 20 miles.