Question 1136867
<pre>       M = 3S-4
     M+S = 68

(3S-4)+S = 68
  3S-4+S = 68
    4S-4 = 68
      4S = 72
       S = 18

       M = 3S-4
       M = 3(18)-4
       M = 54-4
       M = 50

Edwin</pre>