Elitmus Exam Numerical Ability Averages

Three Scirence classes a.b and c take a life science 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 the average score of class b and c is 81.then the average score of class a,b and c is

Read Solution (Total 1)

Average = (83×3)+(76×4)+(85×5)12

=> 249+304+42512=97812 = 81.5 Ans
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Elitmus Other Question

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