The table shows the parking fees at a car park.
| Time |
Charges |
| First 1 hour or less |
$1.60 |
| Every additional 30 minutes or part thereof |
$1.10 |
| Overnight parking from 10 p.m. to 6:30 a.m. |
$7 |
- Ethan parked his car at the carpark at 3.00 p.m. for 1 hour and 25 minutes. How much did he have to pay?
- Anna parked her car at the car park from 7:40 p.m. on Monday to 11 a.m. on Tuesday. Find the amount of parking fee that she had to pay.
(a)
Amount that Ethan had to pay for 1 hour and 25 minutes
= 1.60 + 1.10
= $2.70
(b)
1 h = 60 min
From 7:40 p.m. to 8:40 p.m.:
1 h
Amount that Anna had to pay from 7:40 p.m. to 8:40 p.m = $1.60
From 8:40 p.m. to 10:00 p.m.: 1 h 20 min
1 h 20 min = 1 x 60 + 20 = 80 min
Number of sets of additional 30 minutes in 1 h 20 min
= 80 ÷ 30
= 2 r 20
Number of sets of additional 30 minutes that Anna had to pay for
= 2 + 1
= 3
Amount that Anna had to pay for all the additional 30 minutes or part thereof for 1 h 20 min
= 3 x 1.10
= $3.30
From 10:00 p.m. to 6.30. a.m.
Amount that Anna had to pay from 10:00 to 6.30 a.m. = $7
From 6.30 a.m. to 11 a.m.: 4 h 30 min
4 h 30 min = 4 x 60 + 30 = 270 min
Number of sets of additional 30 minutes in 4 h 30 min
= 270 ÷ 30
= 9
Amount that Anna had to pay for all the additional 30 minutes or part thereof for 4 h 30 min
= 9 x 1.10
= $9.90
Total amount that Anna had to pay
= 1.60 + 3.30 + 7 + 9.90
= $21.80
Answer(s): (a) $2.70; (b) $21.80
