The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$8.00 |
After the fourth hour |
$2.80 per 12 hour or part thereof |
Irene paid $19.20 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Irene paid for the first 4 hours = $8.00
Amount that Irene paid after the fourth hour
= 19.20 - 8.00
= $11.20
Number of sets of $2.80
= 11.20 ÷ 2.80
= 4
Duration of the additional time
= 4 x
12 = 2 h
Greatest number of hours that Irene parked her car at the carpark
= 4 + 2
= 6 h
Answer(s): 6 h