Question

the average marks of 120 student of a class is 48.2 . if the average marks of girls of that class is 54 find the average marks of boys
(please give me answer with calculation) ​

Answer 1

Answer:

174

Step-by-step explanation:

do addition ok 120 + 54

Answer 2

Answer:

The average mark of boys is 42.4

Step-by-step explanation:

The total number of students is 120

Let the average marks of total students be T = 48.2

Let the average marks of girls in that class be G = 54

Let the average marks of boys in that class be B

To find the average marks of boys B in that class, consider

$T=\frac{B+G}{2}$

$48.2=\frac{B+54}{2}$

$B+54=96.4$

$B=42.4$

Therefore the average mark of boys in the class is 42.4