Question

If average marks pf 50 students are 68 and the average marks of another class are 72 and combined average of both classes is 70 find the no. Of another class students?

Answer 1

Answer:

Step-by-step explanation:

marks 1=3400

marks 2=72x

combined marks=3400+72x

average marks=marks 1+marks 2/total no of students

3400+72x/x+50=70

x=50