General Aptitude › Percentage › Question #4558
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QIf a number is increased by 20% and then decreased by 20%, what is the final value of the number?

ID: #4558 Percentage 259 views
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#4558Q ID
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PercentageTopic
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  • A decreases by 4% ✔ ✖
  • B increases by 4% ✔ ✖
  • C decreases by 3% ✔ ✖
  • D increases by 2% ✔ ✖
Correct Answer

Explanation


To solve this problem, 
you can use the given values for x and y to calculate the net percentage change in value.

Here, x = 20 and y = -20.

Therefore, the net percentage change in value is:

(x + y + xy/100)%
= (20 - 20 + (20 * -20)/100)%
= (-4)%

Since the sign is negative, there is a decrease in value by 4%
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