The table shows the parking fees at a car park.

Time	Charges
First 1 hour or less	$2.20
Every additional 30 minutes or part thereof	$1.40
Overnight parking from 10 p.m. to 6:30 a.m.	$6

1. Bobby parked his car at the carpark at 11.00 a.m. for 1 hour and 14 minutes. How much did he have to pay?
2. Nicole parked her car at the car park from 1:20 p.m. on Monday to 10 a.m. on Tuesday. Find the amount of parking fee that she had to pay.

(a)
Amount that Bobby had to pay for 1 hour and 14 minutes
= 2.20 + 1.40
= $3.60

(b)
1 h = 60 min

From 1:20 p.m. to 2:20 p.m.: 1 h
Amount that Nicole had to pay from 1:20 p.m. to 2:20 p.m = $2.20

From 2:20 p.m. to 10:00 p.m.: 7 h 40 min

7 h 40 min = 7 x 60 + 40 = 460 min

Number of sets of additional 30 minutes in 7 h 40 min
= 460 ÷ 30
= 15 r 10

Number of sets of additional 30 minutes that Nicole had to pay for 
= 15 + 1
= 16

Amount that Nicole had to pay for all the additional 30 minutes or part thereof for 7 h 40 min
= 16 x 1.40
= $22.40

From 10:00 p.m. to 6.30. a.m. 
Amount that Nicole had to pay from 10:00 to 6.30 a.m. = $6

From 6.30 a.m. to 10 a.m.: 3 h 30 min

3 h 30 min = 3 x 60 + 30 = 210 min

Number of sets of additional 30 minutes in 3 h 30 min
= 210 ÷ 30
= 7

Amount that Nicole had to pay for all the additional 30 minutes or part thereof for 3 h 30 min
= 7 x 1.40
= $9.80

Total amount that Nicole had to pay
= 2.20 + 22.40 + 6 + 9.80
= $40.40

Answer(s): (a) $3.60; (b) $40.40