AlgebraEasy–MediumFuel left after driving
Algebra practice question
A car's tank holds 80 litres when full, and the car uses 6 litres for every hour of driving. How many litres remain after 5 hours of driving from a full tank?
Answer: 50
80 − 6(5) = 50.
Common wrong answers
- If you answered 30
- 30 is the fuel used.
- If you answered 74
- 74 subtracts one hour's fuel.
- If you answered 110
- 110 adds instead of subtracting.
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