The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$10.00 |
After the fourth hour |
$2.10 per 12 hour or part thereof |
Olivia paid $39.40 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Olivia paid for the first 4 hours = $10.00
Amount that Olivia paid after the fourth hour
= 39.40 - 10.00
= $29.40
Number of sets of $2.10
= 29.40 ÷ 2.10
= 14
Duration of the additional time
= 14 x
12 = 7 h
Greatest number of hours that Olivia parked her car at the carpark
= 4 + 7
= 11 h
Answer(s): 11 h