Multiple choice

What is the percentage decrease, if a number reduces from $70$ to $42$?

  1. $10\%$
  2. $25\%$
  3. $35\%$
  4. $40\%$
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D Correct answer
Explanation

Decrease = 70 - 42 = 28. Percentage decrease = (28 / 70) * 100 = (2/5) * 100 = 40%.

AI explanation

Using the percentage decrease formula, calculate (Initial Value minus Final Value) divided by Initial Value, then multiply by 100. The decrease is 70 minus 42, giving 28. This gives (28 divided by 70) multiplied by 100, which equals 40%.

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