The table shows how much a company charges for a aircon servicing job. Mrs Tang paid the company $440 for a aircon servicing job. How many hours of aircon servicing did she pay for?
Charges | |
First 3 hours | $200 |
Every additional hour | $60 |
Charges | |
First 3 hours | $200 |
Every additional hour | $60 |
Charges | |
First 3 hours | $200 |
Every additional hour | $60 |
Charges | |
First 3 hours | $200 |
Every additional hour | $60 |
Charges | |
First 3 hours | $200 |
Every additional hour | $60 |