The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$6.00 |
After the third hour |
$2.70 per 12 hour or part thereof |
Xuan paid $27.60 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Xuan paid for the first 3 hours = $6.00
Amount that Xuan paid after the third hour
= 27.60 - 6.00
= $21.60
Number of sets of $2.70
= 21.60 ÷ 2.70
= 8
Duration of the additional time
= 8 x
12 = 4 h
Greatest number of hours that Xuan parked her car at the carpark
= 3 + 4
= 7 h
Answer(s): 7 h