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January 31, 2015

January 31, 2015

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

- math -
**Steve**, Friday, January 4, 2013 at 3:44pmdistance = 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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