The table shows the parking rates at a carpark.
Duration |
Charges |
First 4 hours |
$3.00 |
After the fourth hour |
$1.30 per 12 hour or part thereof |
Xandra paid $19.90 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Xandra paid for the first 4 hours = $3.00
Amount that Xandra paid after the fourth hour
= 19.90 - 3.00
= $16.90
Number of sets of $1.30
= 16.90 ÷ 1.30
= 13
Duration of the additional time
= 13 x
12 = 6.5 h
Greatest number of hours that Xandra parked her car at the carpark
= 4 + 6.5
= 10.5 h
Answer(s): 10.5 h