Question

Melissa’s family is driving out of state to her grandmother’s house. They know that it takes 20 gallons of gas to get there, and the cost of three gallons of gasoline is $10.50. How much should the family budget to make the one-way trip?

Answer 1

For this case we have that the cost for each gallon of gasoline is given by:

`\frac {10.5} {3} = 3.5`

We have that the total number of gallons is equal to 20.

As the family is going to make only one trip then, the total cost is given by:

`20 * 3.5 = 70`

Answer:

the family should budget 70 $ to make the one-way trip