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89 + 72 = 161
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average of 72 percent and 89 percent = 80.5%average = (72% + 89%)/2 = 161/2 = 80.5%
80.5% Because (72+89)/2 = 80.5
Yes. 72 + 89 = 161 161 ÷ 2 = 80.5
(72+89)/2 = 161/2 = 80.5%
72 plus 72 is 144.