Question 1185474
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Akshi has five exams scores of 66,64,84,58,and 79. In her Latin class. What score does she need on the final exam 
to have a mean grade of 70? Round your answer to two decimal places,if necessary.  ( ALL exams have a maximum of 100 points.)
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<pre>
Let the unknown score at the 6-th exam be x.


Then you have this equation for x, which expresses the average 70 of the six exams


    {{{(66 + 64 + 84 + 58 + 79 + x)/6}}} = 70.


Multiply both sides by 6 and simplify


    x = 70*6 - 66 - 64 - 84 - 58 - 79 = 69.


<U>ANSWER</U>.  The minimum score she needs on the final exam to get average 70 is 69.
</pre>

Solved.


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Note that @josgarithmetic has an error in his setup equation &nbsp;&nbsp;(just fixed after my note).


@greenestamps has an error in his calculations &nbsp;&nbsp;(just fixed after my note).



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