SOLUTION: If the class average of around 30 people were 70. How many points will be needed to add to each test to get a new average of 78?

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Question 920312: If the class average of around 30 people were 70. How many points will be needed to add to each test to get a new average of 78?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Adding 8 points to each test gets you a new average of 78.