SOLUTION: two trains leave the same station at the same time, one traveling east and the other traveling west. at the end of 3 hours they are 216 miles apart. if the rate of the train trav

Algebra ->  Expressions-with-variables -> SOLUTION: two trains leave the same station at the same time, one traveling east and the other traveling west. at the end of 3 hours they are 216 miles apart. if the rate of the train trav      Log On


   

Question 467331: two trains leave the same station at the same time, one traveling east and the other traveling west. at the end of 3 hours they are 216 miles apart. if the rate of the train traveling east is 12 miles per hour faster than the rate of the other train, find their rate.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
3(n+n+12)=216
6n+36=216
6n=180
n=30
n+12=42
The trains are going 30 mph and 42 mph..