Question
The table shows the parking rates at a carpark.

Duration Charges
First 3 hours $9.00
After the third hour $1.10 per 12 hour or part thereof

Usha paid $25.50 for her parking charges. What was the greatest number of hours she parked her car at the carpark?
2 m

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The table shows the parking rates at a carpark.

Duration Charges
First 3 hours $9.00
After the third hour $1.10 per 12 hour or part thereof

Usha paid $25.50 for her parking charges. What was the greatest number of hours she parked her car at the carpark?