Answer:
21.5 miles total
Step-by-step explanation:
First, identify what you know:
1) Mike can run 4 mph, and runs a total of 1 hour, and 45 minutes (105 min)
2) Chris can run 6 mph, and runs a total of 70 minutes.
3) John can run 5 mph, and runs a total of 1 hour, and 30 minutes (90 min)
We need to calculate how many miles each person ran, and then add the miles ran, to find the total!
Mike: 1 hour and 45 minutes it equal to 1.75! So, in one hour, Mike ran 4 miles. He ran 3/4 of 4 mph, in 3/4 of an hour! Thus, Mike ran 7 miles. Simply multiply 1.75 by 4, to get 7 mph.
Chris: Chris ran 6 mph for 70 minutes. 6 mph, means that Chris can run one mile per every ten minutes! In 70 minutes, he'll have run 7 miles.
John: If john ran 90 minutes, that means he ran 1.5 hours! Simply multiply 1.5 by 5 mph, to get 7.5 miles!
Now, all we need to do, is add the totals!
7 + 7 + 7.5 = 21.5
In total, Mike, Chris, and John ran 21.5 miles!
Hope this helps! :)
