SOLUTION: if 89 is 40% of my average and 88 is 40% of my average and 90 is 20 %....what is my average???

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Question 820450: if 89 is 40% of my average and 88 is 40% of my average and 90 is 20 %....what is my average???
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.40*89+.40*88+.20*90=88.8