The table shows the parking fees at a car park.

Time	Charges
First 1 hour or less	$2.10
Every additional 30 minutes or part thereof	$1.70
Overnight parking from 10 p.m. to 6:30 a.m.	$7

1. Julian parked his car at the carpark at 8.00 a.m. for 1 hour and 25 minutes. How much did he have to pay?
2. Kylie parked her car at the car park from 4:35 p.m. on Monday to 8 a.m. on Tuesday. Find the amount of parking fee that she had to pay.

(a)
Amount that Julian had to pay for 1 hour and 25 minutes
= 2.10 + 1.70
= $3.80

(b)
1 h = 60 min

From 4:35 p.m. to 5:35 p.m.: 1 h
Amount that Kylie had to pay from 4:35 p.m. to 5:35 p.m = $2.10

From 5:35 p.m. to 10:00 p.m.: 4 h 25 min

4 h 25 min = 4 x 60 + 25 = 265 min

Number of sets of additional 30 minutes in 4 h 25 min
= 265 ÷ 30
= 8 r 25

Number of sets of additional 30 minutes that Kylie had to pay for 
= 8 + 1
= 9

Amount that Kylie had to pay for all the additional 30 minutes or part thereof for 4 h 25 min
= 9 x 1.70
= $15.30

From 10:00 p.m. to 6.30. a.m. 
Amount that Kylie had to pay from 10:00 to 6.30 a.m. = $7

From 6.30 a.m. to 8 a.m.: 1 h 30 min

1 h 30 min = 1 x 60 + 30 = 90 min

Number of sets of additional 30 minutes in 1 h 30 min
= 90 ÷ 30
= 3

Amount that Kylie had to pay for all the additional 30 minutes or part thereof for 1 h 30 min
= 3 x 1.70
= $5.10

Total amount that Kylie had to pay
= 2.10 + 15.30 + 7 + 5.10
= $29.50

Answer(s): (a) $3.80; (b) $29.50