Homework Help: Algebra

Posted by William Tolson on Tuesday, October 12, 2010 at 7:01pm.

trains a and b are traveling in the same direction on parallel tracks. train a is traveling at 60 miles per hour and train b is traveling at 80 miles per hour. train a passes a station at 9:10 am. if train b passes the same station at 9:25am, at what time will train b catch up to train a?

Algebra - Heather, Tuesday, October 12, 2010 at 7:10pm
is that an olympiad question? I so, the answer may be 12:25. It may be this because you have to use lcm to get the answer. The lcm is 240 and 80 goes in to 240 3 times. 9:25 plus 3 hours is 12:15.
Algebra - Heather, Tuesday, October 12, 2010 at 7:11pm
Sorry I meant 12:25 is the answer.

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