SOLUTION: a long distance runner started at speed of 8mph. 30 minutes later a second runner start the course at 11 mph. how long after the second runner start will he over take the first run
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Question 1200462: a long distance runner started at speed of 8mph. 30 minutes later a second runner start the course at 11 mph. how long after the second runner start will he over take the first runner?
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
Upon start of the second runner, the two are miles apart.
Approach speed of the second runner to the first runner is mph.
x, time to close the distance of the 4 miles;
1 hour 20 minutes
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