The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$10.00 |
After the fourth hour |
$1.80 per 12 hour or part thereof |
Sabrina paid $31.60 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Sabrina paid for the first 4 hours = $10.00
Amount that Sabrina paid after the fourth hour
= 31.60 - 10.00
= $21.60
Number of sets of $1.80
= 21.60 ÷ 1.80
= 12
Duration of the additional time
= 12 x
12 = 6 h
Greatest number of hours that Sabrina parked her car at the carpark
= 4 + 6
= 10 h
Answer(s): 10 h