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Q: A number is increased by 20% and then decreased by 20%, the final value of the number is ?

  • 1
    increase by 2%
  • 2
    decrease by 3%
  • 3
    decrease by 4%
  • 4
    increase by 5%
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Answer : 3. "decrease by 4%"
Explanation :

Answer: C) decrease by 4% Explanation: Here, x = 20 and y = - 20Therefore, the net % change in value=x + y + xy100 %= 20 + -20 + 20 × -20100%  or  - 4% Since the sign is negative, there is a decrease in value by 4%.

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