Amy spent $6.00 for 2 gallons of gas. Bobby paid $15.00 for 6 gallons of gas. Carlos paid $32.00 for 8 gallons of gas. List the people in order of how much they paid for one gallon of gas, from the cheapest to the most expensive cost per gallon.

Question

Amy, Carlos, Bobby
Amy, Bobby, Carlos
Bobby, Amy, Carlos
Bobby, Carlos, Amy

Answer 1

To determine the cost per gallon for each person, we will divide the total amount paid by the number of gallons of gas each person purchased.

1. Amy:

   • Total amount paid: $6.00
   • Gallons of gas: 2
   • Cost per gallon: \( \frac{6.00}{2} = 3.00 \)

2. Bobby:

   • Total amount paid: $15.00
   • Gallons of gas: 6
   • Cost per gallon: \( \frac{15.00}{6} = 2.50 \)

3. Carlos:

   • Total amount paid: $32.00
   • Gallons of gas: 8
   • Cost per gallon: \( \frac{32.00}{8} = 4.00 \)

Now we can compare the costs per gallon:

• Amy: $3.00
• Bobby: $2.50
• Carlos: $4.00

Ordering these from cheapest to most expensive cost per gallon:

1. Bobby: $2.50
2. Amy: $3.00
3. Carlos: $4.00

Thus, the correct order is: Bobby, Amy, Carlos.