Posted by **treena** on Friday, January 4, 2013 at 12:53pm.

A northbound train and a southbound train meet each other on parallel tracks heading in opposite directions. The northbound train travels 12 miles per hour faster than the southbound train. After 2.5 hours, they are 330 miles apart. At what speeds are the two trains traveling?

- math -
**Steve**, Friday, January 4, 2013 at 3:44pm
distance = speed * time

2.5(x+x+12) = 330

2x+12 = 132

2x=120

x=60

so, southbound speed is 60, northbound is 72

after 2.5 hours, the trains have traveled 150 and 180 miles, respectively.

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