if a man travels r miles and hour for h hours and s miles an hour for t hours, what is his average rate in miles per hour for the ENTIRE distance traveled?

Question

a. rh+st
b. r/h+s/t
c. rh+st/2
d. rh+st/h+t

is the answer b?

Answer 1

No, the average speed will be

totaldistance/totaltime

now, recall that distance=speed*time

Answer 2

(r*h + s*t)/(h + t). = Average speed.