The table shows the parking rates at a carpark.
Duration |
Charges |
First 3 hours |
$4.00 |
After the third hour |
$1.40 per 12 hour or part thereof |
Usha paid $6.80 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 = $4.00
Amount that Usha paid after the third hour
= 6.80 - 4.00
= $2.80
Number of sets of $1.40
= 2.80 ÷ 1.40
= 2
Duration of the additional time
= 2 x
12 = 1 h
Greatest number of hours that Usha parked her car at the carpark
= 3 + 1
= 4 h
Answer(s): 4 h