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 (774x)/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

Math  ff, Wednesday, November 30, 2016 at 3:37pm
Giovanni knows that 16/25 of his classmates are females. what percentage of his classmates are females.
Answer This Question
Related Questions
 math  STATISTICS The mean score for samantha's first s algebra quizzes was 88. ...
 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 ...
 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...
 Math  John has scores of 88,73,90,85,93 on five math quizzes. What scores must ...
 Java programming  â€“ One Dimensional Array Consider this example problem: You ...
 Math  7. A student has received scores of 88, 82, and 84 on three quizzes. If ...
 algebra  Jacob has a mean score of 78 after his first four math tests. He wants...
 Measures of Central Tendency  The table below shows the scores of a group of ...
More Related Questions