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20 percent of what number is 450?

450 is 20% of 2250

Working out percentage problems of the form "450 is 20 percent of what number?"

  1. We have, 20% × x = 450
  2. or, 20/100 × x = 450
  3. Multiplying both sides by 100 and dividing both sides by 20,
    we have x = 450 × 100/20
  4. x = 2250

    If you are using a calculator, simply enter 450×100÷20, which will give you the answer.

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