The table shows how much a company charges for a aircon servicing job. Mrs Chau paid the company $490 for a aircon servicing job. How many hours of aircon servicing did she pay for?
Charges | |
First 3 hours | $190 |
Every additional hour | $60 |
Charges | |
First 3 hours | $190 |
Every additional hour | $60 |
Charges | |
First 3 hours | $190 |
Every additional hour | $60 |
Charges | |
First 3 hours | $190 |
Every additional hour | $60 |
Charges | |
First 3 hours | $190 |
Every additional hour | $60 |