The table shows the parking rates at a carpark.
Duration |
Charges |
First 2 hours |
$6.00 |
After the second hour |
$1.30 per 12 hour or part thereof |
Erika paid $20.30 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Erika paid for the first 2 hours = $6.00
Amount that Erika paid after the second hour
= 20.30 - 6.00
= $14.30
Number of sets of $1.30
= 14.30 ÷ 1.30
= 11
Duration of the additional time
= 11 x
12 = 5.5 h
Greatest number of hours that Erika parked her car at the carpark
= 2 + 5.5
= 7.5 h
Answer(s): 7.5 h