2020 AMC 10 A

Complete problem set with solutions and individual problem pages

Problem 4 Easy

A driver travels for 2 hours at 60 miles per hour, during which her car gets 30 miles per gallon of gasoline. She is paid \$ 0.50 per mile, and her only expense is gasoline at \$ 2.00 per gallon. What is her net rate of pay, in dollars per hour, after this expense?

  • A.

    20

  • B.

    22

  • C.

    24

  • D.

    25

  • E.

    26

Answer:E

Since the driver travels 60 miles per hour and each hour she uses 2 gallons of gasoline, she spends \$ 4 per hour on gas. If she gets \$ 0.50 per mile, then she gets \$ 30 per hour of driving. Subtracting the gas cost, her net rate of pay per hour is (E) 26