Question

The students of three classes, A, B and C take a
test. The average per student marks of the classes
A and B put together is 71. The average marks per
student of the classes B and C put together is 76.
The average per student marks of the class A and C
put together is 79. Find the range of the average
marks (p) of all the three classes put together.

Answer 1

A+B=71
B+C=76
C+A=79
2(A+B+C)=216
SO,A+B+C = 216/2 i.e. 108
This.....should be the ans!!!
And it should help you ☺️☺️

Answer 2

Step-by-step explanation:

AB=71

BC=76

AC=79

2(A+B+C)=226

A+B+C=226/2

A+B+C=113