The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$3.00 |
After the fourth hour |
$2.10 per 12 hour or part thereof |
Jane paid $21.90 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Jane paid for the first 4 hours = $3.00
Amount that Jane paid after the fourth hour
= 21.90 - 3.00
= $18.90
Number of sets of $2.10
= 18.90 ÷ 2.10
= 9
Duration of the additional time
= 9 x
12 = 4.5 h
Greatest number of hours that Jane parked her car at the carpark
= 4 + 4.5
= 8.5 h
Answer(s): 8.5 h