Question 744067
If a parade 2 mi long is proceeding at 2 mph, how long will it take a runner jogging at 7 mph to travel from the front of the parade to the end of the parade?
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The runner's speed relative to the parade is 2 + 7 = 9 mi/hr
d = r*t
t = d/r = 2/9
--> 2/9 hours
= 40/3 minutes