The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$8.00 |
After the third hour |
$1.90 per 12 hour or part thereof |
Barbara paid $36.50 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Barbara paid for the first 3 hours = $8.00
Amount that Barbara paid after the third hour
= 36.50 - 8.00
= $28.50
Number of sets of $1.90
= 28.50 ÷ 1.90
= 15
Duration of the additional time
= 15 x
12 = 7.5 h
Greatest number of hours that Barbara parked her car at the carpark
= 3 + 7.5
= 10.5 h
Answer(s): 10.5 h