MediumMath· Problem-Solving and Data Analysis· Percentages· MCQ
Which of the following represents the result of increasing the quantity x by 9%, where ?
A
B
C
D
Correct answer: A
Explanation
Choice A is correct. Increasing the positive quantity x by 9% is the result of adding 9% of x to x. 9% of x can be represented algebraically as , or . Adding this expression to x yields , or .
Choice B is incorrect. This represents 9% of x. Choice C is incorrect. This represents increasing x by 9, not by 9%. Choice D is incorrect. This represents increasing x by 0.09, not by 9%.
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id cb_question_bank:5c98eeb6-9ef5-44ba-8ffb-09a63eec06cd · question 8a714fa1 · IBN 026407-DC
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