Question

Constance's car has a 12-gallon gas

tank and can travel 25 miles on one
gallon of gas. Constance begins with
a full tank of gas and drives at a
constant rate of 40 miles per hour.
How many hours can she drive
before her car runs out of gas?
A 67
B 7Ź
C7
D 13

Answer 1

7.5 hours

Explanation:

Constance's car has a 12-gallon gas tank.

She can travel 25 miles on one gallon of gas, so she can travel

`25\cdot 12=300` miles using all gas from the tank.

Constance begins with a full tank of gas and drives at a constant rate of 40 miles per hour.

So, Constance can drive for

`300 : 40=7.5` hours.