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7 September, 18:33

A student has grades on 3 examinations of 76,80, and 72. What must a student earn on a 4TH examination to have an average of 80

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  1. 7 September, 19:57
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    Answer:92

    Step-by-step explanation: 80 = (76+80+72+x) / 4

    X = (4*80) - (76+80+72)
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