Question

Vivian drove 84 miles and used 7 gallons of gas. Pauline used 3 gallons of gas to drive 45 miles. Determine how many miles each person drove per 1 gallon of gas. Who drove more fuel-efficiently?

Answer 1

Vivian achieved a fuel efficiency of 12 miles per gallon while Pauline achieved a higher fuel efficiency of 15 miles per gallon, making Pauline the more fuel-efficient driver.

Step-by-step explanation:

To determine how many miles each person drove per 1 gallon of gas, we need to calculate their fuel efficiency. Fuel efficiency is calculated as miles driven divided by gallons of gas used. For Vivian, divide 84 miles by 7 gallons to find that Vivian drove 12 miles per gallon (mpg). For Pauline, divide 45 miles by 3 gallons to get that Pauline drove 15 miles per gallon (mpg).

To decide who drove more fuel-efficiently, we compare their miles per gallon. Pauline's fuel efficiency of 15 mpg is greater than Vivian's 12 mpg, which indicates that Pauline drove more fuel-efficiently than Vivian.