The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$6.00 |
After the third hour |
$1.20 per 12 hour or part thereof |
Tiffany paid $21.60 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Tiffany paid for the first 3 hours = $6.00
Amount that Tiffany paid after the third hour
= 21.60 - 6.00
= $15.60
Number of sets of $1.20
= 15.60 ÷ 1.20
= 13
Duration of the additional time
= 13 x
12 = 6.5 h
Greatest number of hours that Tiffany parked her car at the carpark
= 3 + 6.5
= 9.5 h
Answer(s): 9.5 h