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 |
Emily paid $21.40 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Emily paid for the first 3 hours = $9.00
Amount that Emily paid after the third hour
= 21.40 - 9.00
= $12.40
Number of sets of $3.10
= 12.40 ÷ 3.10
= 4
Duration of the additional time
= 4 x
12 = 2 h
Greatest number of hours that Emily parked her car at the carpark
= 3 + 2
= 5 h
Answer(s): 5 h