18 is 40% of 45

18 is 40% of 45. Divide 18 by 45 and multiply by 100: 18 ÷ 45 = 0.4, and 0.4 × 100 = 40%.

18 is 40% of 45

How to work out what percent 18 is of 45

Percent = (X ÷ Y) × 100

  1. Write it as a fraction: 18/45 (simplifies to 2/5).
  2. Divide: 18 ÷ 45 = 0.4.
  3. Multiply by 100: 0.4 × 100 = 40%.

Check: 40% of 45 = 40 × 45 ÷ 100 = 18.

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