The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$9.00 |
After the third hour |
$3.10 per 12 hour or part thereof |
Winnie paid $15.20 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Winnie paid for the first 3 hours = $9.00
Amount that Winnie paid after the third hour
= 15.20 - 9.00
= $6.20
Number of sets of $3.10
= 6.20 ÷ 3.10
= 2
Duration of the additional time
= 2 x
12 = 1 h
Greatest number of hours that Winnie parked her car at the carpark
= 3 + 1
= 4 h
Answer(s): 4 h