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21 percent of what number is 840?

840 is 21% of 4000

Steps to solve "840 is 21 percent of what number?"

  1. We have, 21% × x = 840
  2. or, 21/100 × x = 840
  3. Multiplying both sides by 100 and dividing both sides by 21,
    we have x = 840 × 100/21
  4. x = 4000

    If you are using a calculator, simply enter 840×100÷21, which will give you the answer.

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