SOLUTION: Charles was racing his remote control car this past weekend. The track is 1/4 mile long. His car averages 10 mph. How long did it take him to complete 20 laps around the track?

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Question 720576: Charles was racing his remote control car this past weekend. The track is 1/4 mile long. His car averages 10 mph. How long did it take him to complete 20 laps around the track?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+d+=+r%2At+
+.25+=+10t+
+t+=+.025+ hrs
This is the time to complete 1 lap
+20%2A.025+=+.5+
It takes a half hour to complete 20 laps