2020 AMC 12A Problem 3
Problem 3 of 25EasierAlgebra
A driver travels for hours at miles per hour, during which her car gets miles per gallon of gasoline. She is paid per mile, and her only expense is gasoline at per gallon. What is her net rate of pay, in dollars per hour, after this expense?
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Solution
In hours she drives miles, earning
She uses gallons, costing
Her net earnings are so her rate is per hour.
Thus, E is the correct answer.