The table shows the parking rates at a carpark.
Duration |
Charges |
First 2 hours |
$9.00 |
After the second hour |
$3.50 per 12 hour or part thereof |
Xuan paid $61.50 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Xuan paid for the first 2 hours = $9.00
Amount that Xuan paid after the second hour
= 61.50 - 9.00
= $52.50
Number of sets of $3.50
= 52.50 ÷ 3.50
= 15
Duration of the additional time
= 15 x
12 = 7.5 h
Greatest number of hours that Xuan parked her car at the carpark
= 2 + 7.5
= 9.5 h
Answer(s): 9.5 h