Question 1135492
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The problem REQUIRES to find integer non-negative numbers x and y satisfying to the system of 2 equations in 2 unknowns


15x + 12y = 359    (assembly time)
 5x +  8y = 142    (testing time)


The x-solution to this system is (Cramer's rule)


    x = {{{(359*8-142*12)/(15*8-5*12)}}} = 19.467


which IS NOT an integer.  // I even will not spend my time to calculate y.


SO, <U>THE PROBLEM HAS NO SOLUTION in integer numbers</U>.     <U>ANSWER</U>


<U>ANSWER</U>.  <U>The problem, as it formulated and posed in the post - HAS NO SOLUTION</U>.
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