SOLUTION: Two vehicles travelled (x + 4) kilometers. The first vehicle travelled for (x^2 – 16) hours while the second travelled for (2/x-4). Find the speed.

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Question 1044859: Two vehicles travelled (x + 4) kilometers. The first vehicle travelled for (x^2 – 16) hours while the second travelled for (2/x-4). Find the speed.

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Expressions for distance and times only are given.
RT=D is Travel Rates Rule for constant rate.
I assume you wrote your "second traveled for..." incorrectly. 

               SPEED         TIME           DISTANCE
vehicle1                     x%5E2-16        x+4
vehicle2                     2%2F%28x-4%29        x+4

Same distance but different travel times - The speed of the vehicles are not the same. Do you want AVERAGE SPEED? Question does not tell.

All you can do is this:
               SPEED              TIME           DISTANCE

vehicle1     (x+4)/(x^2-16)      x^2-16          x+4

vehicle2    (x+4)/(2/(x-4))     2/(x-4)          x+4

Simplifiable to
               SPEED              TIME           DISTANCE

vehicle1     highlight%281%2F%28x-4%29%29              x^2-16          x+4

vehicle2    highlight%28%28x%5E2-16%29%2F2%29           2/(x-4)          x+4