The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$10.00 |
After the third hour |
$1.50 per 12 hour or part thereof |
Joelle paid $20.50 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Joelle paid for the first 3 hours = $10.00
Amount that Joelle paid after the third hour
= 20.50 - 10.00
= $10.50
Number of sets of $1.50
= 10.50 ÷ 1.50
= 7
Duration of the additional time
= 7 x
12 = 3.5 h
Greatest number of hours that Joelle parked her car at the carpark
= 3 + 3.5
= 6.5 h
Answer(s): 6.5 h