Question 1116210
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<pre>
Let x be the speed of the slower car, in miles per hour.

Then the speed of the faster car is (x+6) mph.


The distance equation is 


1.5x + 1.5*(x+6) = 171

1.5x + 1.5x + 9 = 171

3x = 171 - 9 = 162  ====>  x = {{{162/3}}} = 54.


<U>Answer</U>.  The speed of the slower car is 54 mph.  That of the faster car is 60 mph.
</pre>

Solved.


Any other answer is &nbsp;&nbsp;<U>W R O N G</U>.


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