SOLUTION: The mean of the test scores of a class of n students is 68 and the mean of the
test scores of a class of m students is 94.The mean score, when both classes are combined, is 88.Wha
Algebra.Com
Question 366486: The mean of the test scores of a class of n students is 68 and the mean of the
test scores of a class of m students is 94.The mean score, when both classes are combined, is 88.What is the value of m/n ?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The mean of the test scores of a class of n students is 68
Total points for those n students is 68n
-----------------------
and the mean of the test scores of a class of m students is 94.
Total points for those m students is 94m
--------
The mean score, when both classes are combined, is 88.What is the value of m/n ?
---
Equation:
(68n+94m)/(n+m) = 88
---
68n + 94m = 88n + 88m
20n = 6m
m/n= 20/6 = 10/3
=======================
Cheers,
Stan H.
RELATED QUESTIONS
The average (arithmetic mean) of the test scores of a class of "p" students is 70, and... (answered by stanbon)
A class of 24 students took a test. The mean of the test scores for the whole class was... (answered by stanbon,richwmiller)
The average (arithmetic mean) of the test scores of a class of "p" students is 70, and... (answered by richard1234)
the average of the test scores of a class of p students is 70, and the average of the... (answered by jorel1380)
The frequency distribution of test scores for a class of 9 females and 11 males is shown... (answered by stanbon)
To determine if the mean test scores of English students, µE, is higher than from the... (answered by Fombitz)
The average (arithmetic mean) of the test scores of Mrs. Hilgarts's first period class of (answered by stanbon)
Hi, here is the question:
The average (arithmetic mean) of the test scores of a class... (answered by scott8148)
the average of the test scores of a class of x students is 74 and the average of the test (answered by jim_thompson5910)