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OpenStudy (anonymous):
Two trains leave Chicago, one traveling east at 30mph and one traveling west at 40mph. When will the trains be at 210 miles apart? Please help... with I need a diagram and please show work. Thank you.
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OpenStudy (cwrw238):
combined speed = 30+40 = 70 mph time = dstance / speed = 210 / 70 = 3 hours
OpenStudy (anonymous):
Thank you, I almost had it!
OpenStudy (cwrw238):
yw
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