The table shows how much a company charges for a cleaning job. Mrs Ng paid the company $290 for a cleaning job. How many hours of cleaning did she pay for?
Charges | |
First 4 hours | $170 |
Every additional hour | $40 |
Charges | |
First 4 hours | $170 |
Every additional hour | $40 |
Charges | |
First 4 hours | $170 |
Every additional hour | $40 |
Charges | |
First 4 hours | $170 |
Every additional hour | $40 |
Charges | |
First 4 hours | $170 |
Every additional hour | $40 |