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I am having difficulty with a particular style problem: Joe [#permalink]
04 Nov 2006, 02:23
I am having difficulty with a particular style problem:
Joe runs at a rate of 30 miles per hour, while Matt runs at a rate of 40 miles per hour. Starting from an identical starting point, if Joe starts running at 4:30, and Matt begins running at 5:20, at what time will they meet up?
I eventually get to the right answer, but it is taking me way too long. What is the easiest/quickest way to solve these? Thanks!
Thanks for all the help...all of these explanations were great!
What if two people are coming at each other....
Here is one I have seen before...
Steve gets on the elevator at the 11th floor of a building and rides up at a rate of 57 floors per minute. At the same time Joyce gets on an elevator on the 51st floor of the same building and rides down at a rate of 63 floors per minute. If they continue traveling at these rates, at which floor will their paths cross?
Alternatevely you can see that both are travelling at approximatelly 1floor a second.... there are 40 floors so they will need approximatelly 20 seconds to meet each other.... No need for special calculations....