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Basic Mathematics
QUESTION #7990
Question 1
A number is increased by 20% and then decreased by 20%. The final value of the number:
Correct Answer Explanation
Let the number be 100.
After 20% increase: \(100 \times 1.20 = 120\)
After 20% decrease: \(120 \times 0.80 = 96\)
Net change: \(96 - 100 = -4\), i.e., a decrease of 4%.
After 20% increase: \(100 \times 1.20 = 120\)
After 20% decrease: \(120 \times 0.80 = 96\)
Net change: \(96 - 100 = -4\), i.e., a decrease of 4%.
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