SOLUTION: Jill had a mean score of 80 on the first three math tests and a mean score of 90 on the last two tests.What is the mean of all five scores?
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Question 1023257: Jill had a mean score of 80 on the first three math tests and a mean score of 90 on the last two tests.What is the mean of all five scores? Answer by robertb(5830) (Show Source):
You can put this solution on YOUR website! The first three tests would have a total score of 3*80, or 240. The last two tests would have a total score of 2*90 = 180. Hence the total score for all five tests is 240+180 = 420. Therefore the mean for all five scores 420/5 =
