The table shows the parking rates at a carpark.
Duration |
Charges |
First 2 hours |
$8.00 |
After the second hour |
$2.80 per 12 hour or part thereof |
Abi paid $38.80 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Abi paid for the first 2 hours = $8.00
Amount that Abi paid after the second hour
= 38.80 - 8.00
= $30.80
Number of sets of $2.80
= 30.80 ÷ 2.80
= 11
Duration of the additional time
= 11 x
12 = 5.5 h
Greatest number of hours that Abi parked her car at the carpark
= 2 + 5.5
= 7.5 h
Answer(s): 7.5 h