John walked to the bus stop at a speed of 3 kph, but walked home at a speed of 6 kph. What was his average speed walking to and from the bus stop?	Pick.
A) 9 kph	B) 3 kph	C) 4.5 kph	D) 6 kph	E) 18 kph
(3 kph + 6 kph)/2= 4.5 kph   4.5 kphorrect answer is 4.5 kph
<result>C</result>
John walked to the bus stop at a speed of 3 kph, but walked home at a speed of 6 kph. What was his average speed walking to and from the bus stop?