Question

A car with a 15-gallon gas tank can go 22 miles on 1 gallon of gas. If the tank is full at the beginning of a 377-mile trip, how many times does the driver have to refill the gas tank?

Answer 1

Consider that the car can go 22 miles on 1 gallon of gas, therefore the amount of gas required for the 377 mile trip is calculated as,

$\frac{377}{22}\approx17.136$

So the car needs 17.136 gallons of gas to complete the trip.

Since the capacity of the tank is 15 gallons, so the driver has to fill the tank two times.

First time for the full 15 gallons refill, and the second tme for the remaining 2.136 galllons fuel refill.

Thus, the driver has to refill the gas tank 2 times, to complete the trip.