Question 1204325
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<pre>

x scores for the last, 6th test;

(x+12) scores for each of the first five tests.


An equation for x

    {{{(5*(x+12) + x)/6}}} = 97.


Solve by simplifying, step by step

    5*(x+12) + x = 6*97

    5x + 60 + x = 582

    6x = 582 - 60

    6x = 522

     x = 522/6 = 87.


<U>ANSWER</U>.  His score on the last, 6-th test, is 87.
</pre>

Solved.


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