SOLUTION: Suppose a class has 20 students, who score an average of 80 points on a test. If five more students are added to the class, and the average test score decreases to 78 points, what
Algebra.Com
Question 912905: Suppose a class has 20 students, who score an average of 80 points on a test. If five more students are added to the class, and the average test score decreases to 78 points, what is the average test score of the five new students?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
(1600+5a)/25 = 78
avg = a =
RELATED QUESTIONS
On a certain test, a class with 10 students had an average score of 60 and a class with... (answered by checkley79)
A class of 24 students have an average test score of 92. A second class averaged 82. If... (answered by stanbon)
Students in a math class need an average of at least 90 points to earn an A. One students (answered by nerdybill)
Twenty students in a chemistry class took a test on which the overall average score was... (answered by ewatrrr)
Twenty students in a chemistry class took a test on which the overall average score was... (answered by ewatrrr)
A class with 12 students has an average exam score 75 and another class with 15 students... (answered by TutorDelphia)
20% of the students in Ms. Wise's class made an A on the last test. If 5 students made an (answered by rfer)
What is the detail solution of this question:
In a class of 50 students the boys... (answered by stanbon)
There are 80 students in a class with an average test score of 80. If the top 20 and... (answered by solver91311)