Posted by **David** on Thursday, January 29, 2009 at 6:09pm.

You have a mean score of 86 on 9 quizzes. The teacher decides to drop your lowest quiz score to determine your final quiz mean. After dropping the lowest score, your mean score on the 8 remaining quizzes is 88. What score was dropped?

- Math -
**Reiny**, Thursday, January 29, 2009 at 6:51pm
let the score that was dropped be x

total of all the marks on 9 quizzes = 86*9 = 774

then (774-x)/8 = 88

solve for x

(hope you get 70)

- Math -
**Damon**, Thursday, January 29, 2009 at 6:53pm
sum/9 = 86

sum = 9*86 = 774

(sum - x)/8 = 88

sum - x = 704

774 - x = 704

x = 774 - 704

x = 70

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