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

## Answer This Question

## Related Questions

- math - A teacher allows the students to each "throw out" their lowest test score...
- math - Tim wants his mean (average) quiz score in history class to be 90. His ...
- math - STATISTICS The mean score for samantha's first s algebra quizzes was 88. ...
- statistics - According to CreditReport, the mean credit score in Georgia for ...
- statistics - The scores on the final exam in a course have approximately a bell-...
- Java programming - – One Dimensional Array Consider this example problem: You ...
- algebra - Jacob has a mean score of 78 after his first four math tests. He wants...
- math - Mary's quiz scores were 92 85 78 92 71 77 and 80 she told her mom she had...
- statistics - The Graduate Record Exam (GRE) has a combined verbal and ...
- math - a final examination score in General maths is weighted four times as much...

More Related Questions