The table shows the parking rates at a carpark.
Duration |
Charges |
First 2 hours |
$3.00 |
After the second hour |
$1.80 per 12 hour or part thereof |
Nora paid $10.20 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Nora paid for the first 2 hours = $3.00
Amount that Nora paid after the second hour
= 10.20 - 3.00
= $7.20
Number of sets of $1.80
= 7.20 ÷ 1.80
= 4
Duration of the additional time
= 4 x
12 = 2 h
Greatest number of hours that Nora parked her car at the carpark
= 2 + 2
= 4 h
Answer(s): 4 h