Problem-Solving and Data AnalysisVery hardFuel cost of a trip
Problem-Solving and Data Analysis practice question
A car travels 40 miles on each gallon of fuel, and fuel costs $4 per gallon. How many dollars does the fuel for a 300-mile trip cost?
Answer: 30
300/40 = 7.5 gallons, and 7.5 × 4 = 30.
Common wrong answers
- If you answered 120
- 120 multiplies 30 by 4 again.
- If you answered 1200
- 1200 multiplies 300 by 4, ignoring the miles per gallon.
- If you answered 7.5
- 7.5 is the number of gallons, not the cost.
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