During a trip, Francine traveled x percent of the total distance at an average speed of 40 miles per hour and the rest of the distance at an average speed of 60 miles per hour. In terms of x, what was Francineâ€™s average speed for the entire trip?

A. (180-x)/2

B. (x+60)/4

C. (300-x)/5

D. 600/(115-x)

E. 12,000/(x+200)

OPEN DISCUSSION OF THIS QUESTION IS HERE: during-a-trip-francine-traveled-x-percent-of-the-total-94933.html