Danielle earns $36.80 for 4 hours of yardwork. MacKenzie earns $50.40 for 6 hours of yardwork. Who earns more money per hour? How much more?

Danielle earns $9.20
36.80/6=9.2
MacKenzie earns $8.40
50.40/6=8.4
Therefore Mackenzie earns more.