The table shows the parking rates at a carpark.
Duration |
Charges |
First 2 hours |
$10.00 |
After the second hour |
$1.40 per 12 hour or part thereof |
Cathy paid $19.80 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Cathy paid for the first 2 hours = $10.00
Amount that Cathy paid after the second hour
= 19.80 - 10.00
= $9.80
Number of sets of $1.40
= 9.80 ÷ 1.40
= 7
Duration of the additional time
= 7 x
12 = 3.5 h
Greatest number of hours that Cathy parked her car at the carpark
= 2 + 3.5
= 5.5 h
Answer(s): 5.5 h