the last time robert filled up his car with gas, he paid $24.50 for 7 gallons. if the price stays the same…

the last time robert filled up his car with gas, he paid $24.50 for 7 gallons. if the price stays the same, how much will he pay for 15 gallons of gas?

the last time robert filled up his car with gas, he paid $24.50 for 7 gallons. if the price stays the same, how much will he pay for 15 gallons of gas?

Answer

Explanation:

Step1: Calculate unit - price

First, find the price per gallon. The price per gallon $p$ is the total cost divided by the number of gallons. So $p=\frac{24.50}{7}$. $p = 3.5$ dollars per gallon.

Step2: Calculate cost for 15 gallons

Then, to find the cost $C$ for 15 gallons, multiply the unit - price by the number of gallons. So $C=p\times15$. Substitute $p = 3.5$ into the formula: $C=3.5\times15=52.5$ dollars.

Answer:

$52.5$