A train leaves a station at noon and travels west at a rate of 25km/h. At 3PM a second train leaves the station and travels south at the rate of 20km/h. At what rate are trains separating at 4PM?

Question

anonymous · Answer

@freckles

anonymous · Answer

I'm not sure how to draw it out either... :(

freckles · Answer

brain is pending...

freckles · Answer

the different times is what I'm trying to wrap my brain around

freckles · Answer

like if was all the same time I would picture a right triangle 
and maybe we can still use a right triangle but we will have to calculate certain things out

anonymous · Answer

so we use x^2+y^2=z^2?

freckles · Answer

Pretend we have at noon:
one train travels west at a rate of 25km/h
another travels south at a rate of 20km/h
and we want to calculate at what rate the trains are separating at noon.


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But I don't see how to find x,y, or z
since we aren't given the ending time or the lengths of those measurements...
And again this is all assuming everything started at the same time.

I'm still trying to think about how to calculate the time difference thing out. 

@zedprix can I get your eyes on this related rates problem please? Thank you kindly.