The table shows how much a company charges for a gardening job. Mrs Lau paid the company $640 for a gardening job. How many hours of gardening did she pay for?
Charges | |
First 3 hours | $220 |
Every additional hour | $70 |
Charges | |
First 3 hours | $220 |
Every additional hour | $70 |
Charges | |
First 3 hours | $220 |
Every additional hour | $70 |
Charges | |
First 3 hours | $220 |
Every additional hour | $70 |
Charges | |
First 3 hours | $220 |
Every additional hour | $70 |