After robbing a bank in Dodge City, a robber gallops off at 12 mi/h. 20 minutes later, the marshall leaves to?pursue the robber at 16 mi/h. How long (in hours) does it take the marshall to catch up to the robber? | |
After robbing a bank in Dodge City, a robber gallops off at 12 mi/h. 20 minutes later, the marshall leaves to?pursue the robber at 16 mi/h. How long (in hours) does it take the marshall to catch up to the robber? | |
12mi/h=12/60mi/m=0.2mi/m
0.2mi/m x 20m = 4mi
4 miles after 20 minutes
12 / 16 = 0.75h
0.75 hours to catch up to the robber