SOLUTION: two cars going in opposite directions leave at the same time. one automobile travels 15 mph faster than the other. In 4 hours the automobiles are 460 miles apart. find the speed ea
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: two cars going in opposite directions leave at the same time. one automobile travels 15 mph faster than the other. In 4 hours the automobiles are 460 miles apart. find the speed ea
Log On
Question 964818: two cars going in opposite directions leave at the same time. one automobile travels 15 mph faster than the other. In 4 hours the automobiles are 460 miles apart. find the speed each Answer by macston(5194) (Show Source):
You can put this solution on YOUR website! .
460mi/4hr=115mi/hr The sum of the two cars speeds is 115moh.
S=slower car F-faster car=S+15mph
S+F=115mph Substitute for F.
S+S+15mph=115mph Subtract 15mph from each side.
2S=100mph Divide each side by 2.
S=50mph ANSWER 1: The slower car was traveling 50 miles per hour.
F=S+15mph=50mph+15mph=65mph ANSWER 2: The faster car traveled 65 miles per hour.
