Question
A taxi service charges the following rates:

Distance travelled Charge
First kilometre or less $2.70
Every 400 m thereafter or less $0.50

Hilda paid a taxi fare of $4.70. What was the greatest distance that Hilda could have travelled in the taxi? Give your answer in km.
2 m

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A taxi service charges the following rates:

Distance travelled Charge
First kilometre or less $2.70
Every 400 m thereafter or less $0.50

Hilda paid a taxi fare of $4.70. What was the greatest distance that Hilda could have travelled in the taxi? Give your answer in km.