SOLUTION: The average mark on a test for a class of 35 students was 61%. The average mark obtained by the 15 girls in the class was 65%. What was the average mark obtained by the boys?

Question 1052885: The average mark on a test for a class of 35 students was 61%. The average mark obtained by the 15 girls in the class was 65%. What was the average mark obtained by the boys?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
[ ave mark ] = [ total of marks ] / [ number of students ]
----------------------
For all the students:

Total of marks for all students
------------------------------
For the girls:

Total of marks for girls
------------------------

and

---------------------
Let = the average mark for the boys

The average mark for the boys is 58

RELATED QUESTIONS
In a school of three classes pupils took the same examination. Class A contain 30 pupil... (answered by ankor@dixie-net.com)

the average mark scored by students in a class is 65. the average mark of girls is 80.... (answered by Fombitz)

Class of 20 students merged with class of 20 students. The average mark at a test in the... (answered by ewatrrr)

The average test mark for class of 20 students is 65. Peter's mark was recorded as 54... (answered by Fombitz)

In a class of 10 people, the average mark for the test was 75%.If an additional person... (answered by lwsshak3)

In a class test, the average score for the girls was 83 and the average score for the... (answered by ikleyn)

in a certain statistics class, the marks obtained by students on a class test followed a... (answered by stanbon)

in a certain statistics class, the marks obtained by students on a class test followed a (answered by Boreal)

In a certain stats class, the marks obtained by students on a class test followed a... (answered by CPhill)