Let number of students in the other class, be N

Then total scores for this class is: 80N

Total scores for 36-student class: 36(50), or 1,800

Total number of students in both classes = N + 36

We then get the following SCORES equation: 80N + 1,800 = 62(N + 36)

80N + 1,800 = 62N + 2,232

80N – 62N = 2,232 – 1,800

18N = 432

N, or number of students in other class = , or  

Answer by ikleyn(52800)   (Show Source): You can put this solution on YOUR website!
 .

there are 2 classes with an average of 62. One class of 36 students has an avg of 50 and the other class has an avg of 80. How many students are in the other class?

---------------------------------------------------------------------





One class of 36 students has an avg of 50. 

So, their scores are 36*50 = 1800 in total.





The second class of x (unknown) students has an avg of 80. 

So, their scores are x*80 = 80x in total.





The scores for both classes are 1800 + 80x.

The number of students in both classes is (36+x).





The average score for two classes is .

It is equal to 62.





So, your equation is 





 = 62.





Solve it for x.





1800 + 80x = 62*(36+x),



1800 + 80x = 2232 + 62x



80x - 62x = 2232 - 1800,



18x = 432,





x =  = 24.



 

RELATED QUESTIONS

If we are given the avg weight of males in one class of 50 students is 176 lbs. with a... (answered by stanbon)

The average grade of two classes is 88. One class has 30 students with an average grade... (answered by oberobic)

Avg in Math       Number of Students

A                        8

B                    (answered by stanbon)

A teacher has two math classes. In one class there are 80 students and the average grade... (answered by dfrazzetto,stanbon)

An elementary school is offering two optional language classes, one in French and the... (answered by ikleyn)

Avg in Math       Number of Students

A                        8

B                    (answered by lynnlo)

Two classes, one with 50 students and the other with 30, take the same exam. The combined  (answered by checkley71)

A class with 12 students has an average exam score 75 and another class with 15 students... (answered by TutorDelphia)

Mr. Howard has two different classes of sophomore Geometry students.  On a recent... (answered by josmiceli)