The table shows how much a company charges for a aircon servicing job. Mrs Tan paid the company $300 for a aircon servicing job. How many hours of aircon servicing did she pay for?
Charges | |
First 3 hours | $140 |
Every additional hour | $40 |
Charges | |
First 3 hours | $140 |
Every additional hour | $40 |
Charges | |
First 3 hours | $140 |
Every additional hour | $40 |
Charges | |
First 3 hours | $140 |
Every additional hour | $40 |
Charges | |
First 3 hours | $140 |
Every additional hour | $40 |