PSLE
Esther 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 3 minutes and travelled a total distance of 6.8 km to reach Esther's home. How much was her taxi fare?

Taxi Fare
First km	$3.80
Every additional 400 m or less	$0.43
Every 30 seconds waiting or less	$0.30

Amount to pay for the first 1 km = $3.80

Remaining distance to pay for
= 6.8 - 1
= 5.8 km

1 km = 1000 m
5.8 km = 5.8 x 1000 = 5800 m

Sets of additional 400 m
= 5800 ÷ 400
= 14 r 200

Sets of additional 400 m or less
= 14 + 1
= 15

Amount to pay for remaining 5.8 km
= 15 x 0.43
= $6.45

1 min = 60 s
3 min = 3 x 60 = 180 s

Sets of 30 seconds of waiting
= 180 ÷ 30
= 6 r 0

Amount to pay for sets of 30 seconds of waiting or less
= 6 x 0.30
= $1.80

Esther's taxi fare
= 3.80 + 6.45 + 1.80
= $12.05

Answer(s): $12.05