Question
A taxi service charges the following rates:

Distance travelled Charge
First kilometre or less $3.50
Every 400 m thereafter or less $0.40

Mary paid a taxi fare of $5.50. What was the greatest distance that Mary 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 $3.50
Every 400 m thereafter or less $0.40

Mary paid a taxi fare of $5.50. What was the greatest distance that Mary could have travelled in the taxi? Give your answer in km.