human
John repairs 5 cars. 3 of the cars take 40 minutes each to repair. The remaining ones take 50% longer each to repair. He makes $20 per hour repairing cars. How much money does he make?
assistant
How many minutes do the 3 cars take? ** The 3 cars take 3*40=<<3*40=120>>120 minutes to make
How many more cars does he repair? ** He repairs 5-3=<<5-3=2>>2 more cars
How many minutes do the remaining cars take? ** They each take 40*.5=<<40*.5=20>>20 minutes longer per car
How many minutes do the remaining cars take? ** So they each take 40+20=<<40+20=60>>60 minutes
How many minutes did John repair cars? ** So he repaired cars for 120+2*60=<<120+2*60=240>>240 minutes
How many hours did John repair cars? ** That is 240/60=<<240/60=4>>4 hours
How much money did John make? ** So he made 4*20=$<<4*20=80>>80
#### 80