The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$10.00 |
After the fourth hour |
$2.30 per 12 hour or part thereof |
Sarah paid $23.80 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Sarah paid for the first 4 hours = $10.00
Amount that Sarah paid after the fourth hour
= 23.80 - 10.00
= $13.80
Number of sets of $2.30
= 13.80 ÷ 2.30
= 6
Duration of the additional time
= 6 x
12 = 3 h
Greatest number of hours that Sarah parked her car at the carpark
= 4 + 3
= 7 h
Answer(s): 7 h