Problema Solution

Jose left the airport and traveled toward the mountains. Kayla left 2.1 hours later traveling 35mph faster in an effort to catch up to him. After 1.2 hours Kayla finally caught up. Find Jose's average speed.

Answer provided by our tutors

let


v = Jose's average speed, v>0


v + 35 = Kayla's average speed


v*(2.1 + 1.2) = (v + 35)*1.2


by solving we find:


v = 20 mph


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Jose's average speed in 20 mph.