Multiple choice

If the price of an article is decreased by 25\%, then to restore its former value the new price must be increased by what percent?

  1. $33.33$
  2. $50$
  3. $20$
  4. $25$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let the original price be 100. After a 25% decrease, the price becomes 75. To restore it to 100, we need an increase of 25 on 75, which is 25/75 × 100 = 33.33%. This is because the percentage increase needed to reverse a decrease is always greater than the original decrease percentage.