SOLUTION: adam tried tocompute the average of his 7 test scores. He mistakenly divide the correct sum of all of his test scores by 6 wich yielded 84. What is adams correct average test score

Algebra ->  Average -> SOLUTION: adam tried tocompute the average of his 7 test scores. He mistakenly divide the correct sum of all of his test scores by 6 wich yielded 84. What is adams correct average test score      Log On


   

Question 88839: adam tried tocompute the average of his 7 test scores. He mistakenly divide the correct sum of all of his test scores by 6 wich yielded 84. What is adams correct average test score?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let x represent the sum of his scores. So when he divides the sum by 6 he gets:

x%2F6=84

cross%286%29x%2Fcross%286%29=6%2A84 Now multiply both sides by 6

x=504 Multiply

So the sum of his scores is 504. Now divide 504 by 7 to find the correct average:

Average=504%2F7=72

So the correct average is 72