SOLUTION: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test

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Question 26492: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test score?
Found 3 solutions by venugopalramana, stanbon, Earlsdon:
Answer by venugopalramana(3286) About Me  (Show Source):
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Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test score?
AVERAGE WITH MISTAKEN DIVISION BY 6 =84
SO TOTAL OF ALL MARKS =6*84
CORRECT AVERAGE =TOTAL/7=6*84/7=72

Answer by stanbon(75887) About Me  (Show Source):
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Let the correct sum of his scores be "x".
Then x/6=84
x=504 is the correct sum of his scores.
To get his average score divide by 7, to get:
504/7=72 (his correct average score)
Cheers,
Stan H.

Answer by Earlsdon(6294) About Me  (Show Source):
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Let the sum of Adam's seven test scores = x. Let's find the sum.
x%2F6+=+84 Multiply by both sides by 6.
x+=+504
The sum of Adam's seven test scores is 504. To find the correct average, you'll divide this sum by the number of scores, or 7.
Let A = Adam's correct average.
A+=+504%2F7
A+=+72
Adam's correct average test score is 72.