The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$8.00 |
After the fourth hour |
$3.10 per 12 hour or part thereof |
Roshel paid $57.60 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Roshel paid for the first 4 hours = $8.00
Amount that Roshel paid after the fourth hour
= 57.60 - 8.00
= $49.60
Number of sets of $3.10
= 49.60 ÷ 3.10
= 16
Duration of the additional time
= 16 x
12 = 8 h
Greatest number of hours that Roshel parked her car at the carpark
= 4 + 8
= 12 h
Answer(s): 12 h