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- Identify the base.
- Convert percent to fraction/decimal.
- Calculate and match options.
Correct Answer: A
Correct Answer: A
Method / Topic: Percentage
The answer uses the correct base for the percentage calculation.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Percentage
<p>Use successive percentage change: 20 + (-20) + (20 x -20)/100 = -4. So the number decreases by 4%.</p>
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Identify the base.
- Convert percent to fraction/decimal.
- Calculate and match options.
A number is increased by 20% and then decreased by 20%. What is the net percentage change?
Explanation
Correct Answer: A
Method / Topic: Percentage
The answer uses the correct base for the percentage calculation.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Percentage
<p>Use successive percentage change: 20 + (-20) + (20 x -20)/100 = -4. So the number decreases by 4%.</p>
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