Mathematics, 29.05.2020 14:58 jessicascott120305

The average test mark of the class? mark of a class of 20 student is 65. Twum's mark was recorded as 35 instead of 55. What is the correct average mark of the class

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The average test mark of the class? mark of a class of 20 student is 65. Twum's mark was recorded as...

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