AlgebraEasy–MediumHours parked from a stepped charge
Algebra practice question
A car park charges $2.50 for the first hour and $1.75 for each additional hour. A driver paid $11.25. For how many hours in total was the car parked?
Answer: 6
2.50 + 1.75(h − 1) = 11.25 gives h − 1 = 5, so h = 6.
Common wrong answers
- If you answered 5
- 5 is the number of additional hours, not the total.
- If you answered 7
- 7 adds 1 to the total again.
- If you answered 4.5
- 4.5 divides 11.25 by 2.50.
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