SOLUTION: Derek left the ranch on horseback, riding at 21km/h. One hour later his brother Jonathon left the ranch to catch up with Derek. Jonathon rode at 25km/h. How long did it take for Jo
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-> SOLUTION: Derek left the ranch on horseback, riding at 21km/h. One hour later his brother Jonathon left the ranch to catch up with Derek. Jonathon rode at 25km/h. How long did it take for Jo
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Question 121837: Derek left the ranch on horseback, riding at 21km/h. One hour later his brother Jonathon left the ranch to catch up with Derek. Jonathon rode at 25km/h. How long did it take for Jonathon to catch up to Derek? Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! 21T=25(T-1)
21T=25T-25
25T-21T=25
4T=25
T=25/4
T=6.25 HOURS AFTER DEREK LEFT THEY WILL MEET.
PROOF
21*6.25=25*5.25
131.25=131.25
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