SOLUTION: Please help me solve this word problem. I can solve it just cant set up an equation. The word problem is: Dave leaves city A traveling toward city B at 18 miles per hour. At the sa

Question 814064: Please help me solve this word problem. I can solve it just cant set up an equation. The word problem is: Dave leaves city A traveling toward city B at 18 miles per hour. At the same time, Tina leaves cit B traveling toward city A at 14 miles per hour.The distance between the two cities is 112 miles. How long will it take before Dave and Tina meet?
Found 2 solutions by richwmiller, josmiceli:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
14t+18t=112

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
They are heading towards each other.
For me, the easiest way to set it up is
to think of one of them as standing
still ( either one ) and the other
approaching at the sum of their speeds.
So one of them covers the whole 112 miles
instead of both of them.
--------------------
I'll say Tina is standing still, and Dave goes
from A to B

hrs
--------------
You can convince yourself that this works
by using separate equations:"
Dave's equation:

and
Tina's equation:

------------

mi
as it should
Sorry if I got carried away with this
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