Question

Three maths classes: A, B and C take an algebra test. The average score of class A is 83. The average score of class B is 76. The average score of class C is 85. The average score of class A and B is 79 and average score of class B and C is 81. What is the average score of classes A, B, C ?

Answer 1

81.5 is average score of classes

Answer 2

Bonjour !!! frnd .

I think answer is 81.2

Hope it helps.