SOLUTION: A coworker at the palams TV factory drives 15 mph faster than you. In the same time that the coworker travels 12 miles, you travel 7.5 miles to work. How fast is you coworker dri

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A coworker at the palams TV factory drives 15 mph faster than you. In the same time that the coworker travels 12 miles, you travel 7.5 miles to work. How fast is you coworker dri      Log On


   

Question 433184: A coworker at the palams TV factory drives 15 mph faster than you. In the same time that the coworker travels 12 miles, you travel 7.5 miles to work. How fast is you coworker driving?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
A coworker at the palams TV factory drives 15 mph faster than you. In the same time that the coworker travels 12 miles, you travel 7.5 miles to work. How fast is you coworker driving?
..
let x=speed of coworker in mph
then x-15=your speed in mph
distance/speed=travel time
travel times for you and coworker same as stated
12/x=7.5/(x-15)
7.5x=12x-180
4.5x=180
x=40 mph
ans:
Your coworker is driving at 40mph