SOLUTION: Cars are moving in the same direction, one at 40mph, the other at 120mph. They are 160 miles apart when the clock starts. The fast car is behind. When will they be next to each oth

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Cars are moving in the same direction, one at 40mph, the other at 120mph. They are 160 miles apart when the clock starts. The fast car is behind. When will they be next to each oth      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 888723: Cars are moving in the same direction, one at 40mph, the other at 120mph. They are 160 miles apart when the clock starts. The fast car is behind. When will they be next to each other?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Cars are moving in the same direction, one at 40mph, the other at 120mph. They are 160 miles apart when the clock starts. The fast car is behind. When will they be next to each other?
***
let x=distance slower car traveled
x+160=distance faster car traveled
travel time=distance/speed (same for both cars)
x%2F40=%28x%2B160%29%2F120
120x=40(x+160
120x=40x+6400
80x=6400
x=80
x+160=240
x/40=240/120=2
When will they be next to each other? In 2 hours