The table shows how much a company charges for a cleaning job. Mrs Chong paid the company $510 for a cleaning job. How many hours of cleaning did she pay for?
Charges | |
First 3 hours | $210 |
Every additional hour | $60 |
Charges | |
First 3 hours | $210 |
Every additional hour | $60 |
Charges | |
First 3 hours | $210 |
Every additional hour | $60 |
Charges | |
First 3 hours | $210 |
Every additional hour | $60 |
Charges | |
First 3 hours | $210 |
Every additional hour | $60 |