SOLUTION: the average speed of the local train is 10 miles per hour less than half the express train's speed. after 2 hours the express train travels 100 miles more than the local train trav

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: the average speed of the local train is 10 miles per hour less than half the express train's speed. after 2 hours the express train travels 100 miles more than the local train trav      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1020501: the average speed of the local train is 10 miles per hour less than half the express train's speed. after 2 hours the express train travels 100 miles more than the local train traveled in one hour. Find the speed of the local train and the speed of the express train.
Found 2 solutions by jorel555, ikleyn:
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
2(2n+10)=2n+100
4n+20=2n+100
2n=80
n=40
2n+10=90
2(40)=80
2(90)=180!!!!!!!!!!!!!!!!!

Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.
The average speed of the local train is 10 miles per hour less than half the express train's speed.
After 2 hours the express train travels 100 miles more than the local train traveled in one hour.
Find the speed of the local train and the speed of the express train.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The speed of the local train is 40 mph.
The speed of the express train is 90 mph.