In this lesson, the rt=d formula is used to solve a word problem involving uniform motion. A jogger starts running at 6 miles per hour, and half an hour later, another runner leaves the same spot at 7 miles per hour. The problem is to determine how long it will take for the runner to catch up to the jogger. By defining variables and setting up an equation, the solution is found to be three hours.
Solves this word problem using rt=d formula: A jogger started running at an average speed of 6 mph. Half an hour later, another runner started running after him starting from the same place at an average speed of 7 mph. How long will it take for the runner to catch up to the jogger?
Answer: 3 hours
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