SOLUTION: Three people run a mile. The first person runs the mile in seven minutes. The second person takes 5/4 as long as the first person. How many minutes did it take the third person to
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Question 252108: Three people run a mile. The first person runs the mile in seven minutes. The second person takes 5/4 as long as the first person. How many minutes did it take the third person to run the mile if the average for all three people is eight minutes?
You can put this solution on YOUR website! you can find the time of the second runner by multiplying 7*(5/4). The average will be and is equal to 8 minutes.
so 7+8.75+x=8*3
15.75+x=24
x=8.25 minutes
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