The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$9.00 |
After the fourth hour |
$3.30 per 12 hour or part thereof |
Shannon paid $38.70 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Shannon paid for the first 4 hours = $9.00
Amount that Shannon paid after the fourth hour
= 38.70 - 9.00
= $29.70
Number of sets of $3.30
= 29.70 ÷ 3.30
= 9
Duration of the additional time
= 9 x
12 = 4.5 h
Greatest number of hours that Shannon parked her car at the carpark
= 4 + 4.5
= 8.5 h
Answer(s): 8.5 h