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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 35 instead of 55. What is the correct average mark of the class

Respuesta :

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Answer:

66

Step-by-step explanation:

Wrong total mark = 65 * 20 = 1,300

remainder of Tum score to be added= 55-35 = 20

Add this to total = 20 + 1300 = 1320

Correct average score = 1320/20 = 66

Answer:

66

Step-by-step explanation:

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