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Percent means out of 100? Lol.

72 is 100% and we now need 80%. 10% is 7.2x 2 (to get 20%) which is 14.4 so 72 - 14.4 = 57.6.

72 + 57.6 = 129.6 and 180% :)

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13y ago

What else can I help you with?