A number is increased by 20% and then decreased by 20%, the final value of the number is? A. increase by 2% B. decrease by 3% C. decrease by 4% D. increase by 5% Answer Workspace Report Discuss Answer with explanation Answer: Option C Explanation Here, x = 20 and y = – 20 Therefore, the net % change in value =x + y + xy100x + y + xy100 % = 20 + (−20) + 20 × −2010020 + -20 + 20 × -20100% or – 4% Since the sign is negative, there is a decrease in value by 4%. Workspace
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