Question

A woman drives an SUV that gets 15 mi/gal (mpg). Her husband drives a hybrid that gets 65 mg. Every week, they travel the same number of miles. They want to improve their combined mpg. They

have two options on how they can improve it.
Option 1: They can tune the SUV and increase its mileage by 1 mpg and keep the hybrid as it is.
Option 2: They can buy a new hybrid that gets 80 mpg and keep the SUV as it is.
Which option will give them a better combined mpa?

Answer 1

option 2

Explanation:

They both travel x miles per week

option 1: SUV (15 + 1)mpg + hybrid (65)mpg = 81combined mpg

option 2: SUV (15)mpg + hybrid (80) mpg = 95 combined mpg

getting 95mpg is better than 81mpg.

so they should choose option 2