A cyclist bikes x distance at 20 miles per hour and returns over the same path at 16 miles per hour. What is the cyclist's average rate for the round trip in miles per hour? Choose one
A) 17.6 B) 17.3 C) 8.6 D) 17.2 E) 9.0
Distance = d1 = x miles   Speed = s1 = 20 miles per hour   Time = t1 = Distance/ Speed = x/20   2. Going from B to A   Distance = d2 = x miles   Speed = s2 = 16 miles per hour   Time = t2 = Distance/ Speed = x/16   3. 17.6verage Speed = Total Distance/Total Time   Total Distance = x + x = 2x   Total Time = x/20 + x/16 = 9x/80   Speed = 2x/(9x/80) = 160/9   = 17.6   17.6nswer : 17.6
<result>A</result>
A cyclist bikes x distance at 20 miles per hour and returns over the same path at 16 miles per hour. What is the cyclist's average rate for the round trip in miles per hour?