The average (arithmetic mean) of 16 students first quiz scores in a difficult English class is 62.5....
The average (arithmetic mean) of 16 students first quiz scores in a difficult English class is 62.5. When one student dropped the class, the average of the remaining scores increased to 65.0. What is the quiz score of the student who dropped the class?
Answer/Solution
b) 25
Steps/Work
Total Score of 16 students is 16*62.50 = 1000
Total Score of 15 students is 15*65 = 975
So, the score of the person who left is 25 ( 1000 - 975 )
Answer will be (B)
Total Score of 15 students is 15*65 = 975
So, the score of the person who left is 25 ( 1000 - 975 )
Answer will be (B)