<PRE><B>Question 206968</B>
Alex has scored 82, 86, 75, 91, 92, and 87 points out of 100.
 He wants to earn at least a B in the course, which corresponds to an overall
 average grade of 82 or better. 
Out of 100 points, what is the minimum number of points Alex must earn on the
 final exam to achieve this goal?
;
Let x = final exam score
:
{{{(82 + 86 + 75 + 91 + 92 + 87 + x)/7}}} = 82
:
{{{(513 + x)/7}}} = 82
Multiply both sides by 7
513 + x = 82 * 7
:
x = 574 - 513
:
x = 61
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