Question 1201640
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<pre>

Hey, you were on the right track: your equation 

    {{{6/x}}} = {{{6/(x+12)}}} - 0.25


was "almost" right. The error was only in the sign of 0.25 --- it should be +0.25.


When you write such equation, you should think, which term is greater:  {{{6/x}}}  or  {{{6/(x+12)}}}.


Obviously, the greater denominator produces the smaller fraction.

So, in order to have an equality, you should  {{{highlight(highlight(ADD))}}}  0.25 of an hour;  {{{highlight(highlight(NOT))}}}  subtract.
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Such problems require to concentrate your attention.