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18% of 72 = .18*72 = 12.96

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14y ago

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Use the names of operations to convert this to an algebraic equation: "is" means "=" Percent means "/100" (divided by 100) "of" means "*" (multiply) "what number" means to insert your favorite letter for a variable (usually the letter x) 72=18/100 * x 72 = .18x 72/.18 = x 400 = x Mental Check: 10% of 400 is 1/10 of 400 which is 40. 20% of 400 is 2/10 of 400 which is 80. Is 72 larger than 40, less than 80 but closer to 80? Yes. So I think we're at least close. Use your calculator: 18% of 400 or .18 * 400 = 72!!

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Wiki User

15y ago
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18 is 72% of what

= 18 / 72

= 18 / 0.72

= 25

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Wiki User

12y ago
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Q: 72 is 18 percent of what number?
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