A cyclist rides a bicycle 8 km at an average speed of 11 km/hr and again travels 11 km at an average speed of 8 km/hr. What is the average speed for the entire trip?	Choose the correct choice from the following options
A) 8.58
B) 8.76
C) 9.04
D) 9.12
E) 9.25
distance = 19 km   time = 8/11 + 11/8 = (64 + 121) / 88 = 185 / 88 hours   average speed = (19 * 88) / 185 = 9.04 km/h   The answer is 9.04.
<result>C</result>
A cyclist rides a bicycle 8 km at an average speed of 11 km/hr and again travels 11 km at an average speed of 8 km/hr. What is the average speed for the entire trip?