The table shows the parking rates at a carpark.
Duration |
Charges |
First 2 hours |
$9.00 |
After the second hour |
$1.60 per 12 hour or part thereof |
Xuan paid $23.40 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
= 23.40 - 9.00
= $14.40
Number of sets of $1.60
= 14.40 ÷ 1.60
= 9
Duration of the additional time
= 9 x
12 = 4.5 h
Greatest number of hours that Xuan parked her car at the carpark
= 2 + 4.5
= 6.5 h
Answer(s): 6.5 h