The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$7.00 |
After the third hour |
$2.20 per 12 hour or part thereof |
Dana paid $24.60 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Dana paid for the first 3 hours = $7.00
Amount that Dana paid after the third hour
= 24.60 - 7.00
= $17.60
Number of sets of $2.20
= 17.60 ÷ 2.20
= 8
Duration of the additional time
= 8 x
12 = 4 h
Greatest number of hours that Dana parked her car at the carpark
= 3 + 4
= 7 h
Answer(s): 7 h