The table shows how much a company charges for a aircon servicing job. Mrs Cheong paid the company $330 for a aircon servicing job. How many hours of aircon servicing did she pay for?
Charges | |
First 4 hours | $230 |
Every additional hour | $50 |
Charges | |
First 4 hours | $230 |
Every additional hour | $50 |
Charges | |
First 4 hours | $230 |
Every additional hour | $50 |
Charges | |
First 4 hours | $230 |
Every additional hour | $50 |
Charges | |
First 4 hours | $230 |
Every additional hour | $50 |