+1443 One car left a city at 2:00 PM and traveled at an average speed of 40 miles per hour. A second car left at 5:00 PM, traveled the same route and overtook the first car at 8:30 PM. What was the average speed in miles per hour of the second car?
+37146 The first car travels : rate * time = distance
40 mi/hr * ( 6.5 hr) = 260 miles
the second car also travels this distance, but does it in 3.5 hours ( 5 to 8:30)
260 miles / 3.5 hr = 74.29 mi/hr ( 74 2/7 mi/hr)
