Answer:
$2.50
Explanation:
We know that 6 gallons of gas costs $15 and we want to find how much one gallon of gas costs so we are going to use ratio's to work the price of one gallon so,
6 gallons = $15
If we divide both sides by 2 then we get
3 gallons = $7.50
If we divide both sides by 3 then we get
1 gallon = $2.50
So 1 gallon of gas is $2.50, we can check this solution is correct because if we multiply $2.50 by 6 we should get $15 so
2.50 × 6 = $15