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1016

Q:

Three science classes A, B and C take a 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 average score of class B and C is 81. Then the average score of classes A, B and C is

  • 1
    80.5
  • 2
    80
  • 3
    81.5
  • 4
    81
  • Show Answer
  • Workspace

Answer : 3. "81.5"

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