PSLE
Betty took a taxi from her office to her home. Her taxi fare was based on the charges shown. The taxi stopped once at a traffic light for 2 minutes and travelled a total distance of 5.5 km to reach Betty's home. How much was her taxi fare?

Taxi Fare
First km	$2.50
Every additional 500 m or less	$0.42
Every 45 seconds waiting or less	$0.40

Amount to pay for the first 1 km = $2.50

Remaining distance to pay for
= 5.5 - 1
= 4.5 km

1 km = 1000 m
4.5 km = 4.5 x 1000 = 4500 m

Sets of additional 500 m
= 4500 ÷ 500
= 9 r 0

Amount to pay for remaining 4.5 km
= 9 x 0.42
= $3.78

1 min = 60 s
2 min = 2 x 60 = 120 s

Sets of 45 seconds of waiting
= 120 ÷ 45
= 2 r 30

Sets of 45 seconds of waiting or less
= 2 + 1
= 3

Amount to pay for sets of 45 seconds of waiting or less
= 3 x 0.40
= $1.20

Betty's taxi fare
= 2.50 + 3.78 + 1.20
= $7.48

Answer(s): $7.48