SOLUTION: Owen and Evan are running in the Sioux Falls Fun Run. Owen runs at 9 mph, Evan at 7 mph. If they start at the same time, how long will it be before they are 1.2 mi apart? (Express

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Owen and Evan are running in the Sioux Falls Fun Run. Owen runs at 9 mph, Evan at 7 mph. If they start at the same time, how long will it be before they are 1.2 mi apart? (Express       Log On


   

Question 1141588: Owen and Evan are running in the Sioux Falls Fun Run. Owen runs at 9 mph, Evan at 7 mph. If they start at the same time, how long will it be before they are 1.2 mi apart? (Express your answer in minutes.)
Answer by greenestamps(13216) About Me  (Show Source):
You can put this solution on YOUR website!


distance = rate * time

If the times are the same, then also

(difference in distances) = (difference in rates)*time

Since distances are in miles and rates are in mph, if x is the time in hours then

1.2+=+2%28x%29
x+=+0.6

ANSWER: 0.6 hours = 36 minutes.