Jenna rode her bike to school at 5 kph, but rode home at 15 kph. What was her average speed traveling to and from school?	Pick
A) 5 kph	B) 7 kph	C) 10 kph	D) 13 kph	E) 15 kph
(5 kph +15 kph)/2 =10 kph   10 kphorrect answer is: 10 kph
<result>C</result>
Jenna rode her bike to school at 5 kph, but rode home at 15 kph. What was her average speed traveling to and from school?