2020 AMC 10A Problem 4
Problem 4 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
The driver travels miles, so she is paid . The trip uses gallons of gasoline, costing . Her net pay is dollars over hours, or dollars per hour. Thus, E is the correct answer.