Ken's average speed for a trip is 14 miles per hour. During the first part of the trip, he traveled at 15 miles per hour for 2 hours, and then traveled at a different speed for 1 hour the rest of the way. What was her speed for the second part
of the trip?
+36916 15 m/h * 2 hr + x m/h * 1 hr
________________________ = 14 m/hr
2 hr + 1 hr
(15*2 + x ) / 3 = 14
30 + x = 42
x = 12 m/hr
