The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$8.00 |
After the third hour |
$3.40 per 12 hour or part thereof |
Usha paid $52.20 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
Amount that Usha paid for the first 3 hours = $8.00
Amount that Usha paid after the third hour
= 52.20 - 8.00
= $44.20
Number of sets of $3.40
= 44.20 ÷ 3.40
= 13
Duration of the additional time
= 13 x
12 = 6.5 h
Greatest number of hours that Usha parked her car at the carpark
= 3 + 6.5
= 9.5 h
Answer(s): 9.5 h