The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$9.00 |
After the third hour |
$1.90 per 12 hour or part thereof |
Zara paid $33.70 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Zara paid for the first 3 hours = $9.00
Amount that Zara paid after the third hour
= 33.70 - 9.00
= $24.70
Number of sets of $1.90
= 24.70 ÷ 1.90
= 13
Duration of the additional time
= 13 x
12 = 6.5 h
Greatest number of hours that Zara parked her car at the carpark
= 3 + 6.5
= 9.5 h
Answer(s): 9.5 h