Homework Help: Math

Posted by Shawna on Monday, April 28, 2008 at 2:06pm.

Is this correct?
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 3:25pm. If train B passes the same station at 3:40p.m., at what time will train B catch up with train A?
My answer is 4:25pm

Math - Damon, Monday, April 28, 2008 at 2:13pm
A goes distance d in t hours
B goes distance d in (t -.25) hours because 15 minutes is .25 hours
so
60 t = 80 (t - .25)
20 = 20 t
t = 1 hour
so yes
4:25 pm

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