Question

5 gal. x 20 mpg = ? mi.

Using these numbers, estimate how far the driver can travel with 5 gallons of gas and determine whether the answer is an overestimate or an underestimate. Select the correct answer.
A) 10 miles, which is an underestimate
B) 10 miles, which is an overestimate
C) 100 miles, which is an underestimate
D) 100 miles, which is an overestimate

Answer 1

D. If you use one gallon per 20 miles, and you have 5 gallons, 5 x 20 = 100, its an overestimate because your assuming that 5 gallons is enough for 100 miles.