One possibility is 55 + 5*5 = 55 + 25 = 80
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It is 23 because 17+19+21+23 = 80
28 is the answer. if 12 is 15% of a number ,the number is 80. 35% of 80 is 28
No, 80 is a not perfect square.
If 45 = 120% then simply divide 45 by 120, to find 1%, which is 0.375 and then multiply this by 80 to find 80%, which is 30 - or - 1.20X = 45; X = 45/1.20 = 37.5; then 80% of the number is: 37.5 X .80 = 30
It is a rational number because it can be expressed as an improper fraction in the form of -80/1