18 is 20% of what number?

Instant answer with step-by-step formula

18 is 20% of what number = 90
18 ÷ (20 ÷ 100) = 90

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Step-by-step explanation

  1. Write the formula: Part ÷ (Percentage ÷ 100)
  2. Substitute the values: 18 ÷ (20 ÷ 100)
  3. Convert percentage to decimal: 18 ÷ 0.2
  4. Divide to get the answer: 90

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