SOLUTION: Sean biked the first half of a race in 30 minutes. He the biked the other half in 45 minutes. What was Sean's average speed during the bike race?

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Question 852600: Sean biked the first half of a race in 30 minutes. He the biked the other half in 45 minutes. What was Sean's average speed during the bike race?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Sean biked the first half of a race in 30 minutes.
He the biked the other half in 45 minutes.
What was Sean's average speed during the bike race?
:
we have to know the distance
let d = the distance of the race
Ave speed = total dist/total time
d%2F75 = av speed in units/min