Question

average marks of 40 students of a class is 75.5. If average marks of 22 girls is 80 , find average marks of remaining 28 boys

Answer 1

Answer:

45

Step-by-step explanation:

average marks of 40 students of a class is 75.5.

total marks of class = 40*75.5 =3020

average marks of 22 girls is 80

total marks of girls = 1760

total marks of boys + total marks of girls = total marks of class

total marks of boys = 3020-1760=1260

average marks = 1260/28 =45

Answer 2

Answer:

45

Step-by-step explanation:

40×75.5=3020

total marks of the girls =1760

so,

3020-1760=total Mark's of boys

=1260