You can
put this solution on YOUR website!Rate times time equals distance.
The express train travels at a rate of
and takes
to travel the 50 miles.
1.
The local train travels at a rate of
and takes
to travel the 50 miles.
2.
You also know that the rate of the express train is twice the rate of the local train.
And finally you know that the local train arrived 1 hour after the express train.
From 2,
2.
Substitute for
and
2.
From 1, you know that
The express train travels at 50 miles per hour.
From 1,
The express train takes 1 hour to reach Chicago.
The local train travels 25 miles per hour.
The local train takes 2 hours to reach Chicago.
