9000 + 16 2/3 % of ? = 10500
Correct answer: C. 9000
- A. 1500
- B. 1750
- C. 9000
- D. 7500
Explanation
The increase from 9000 to 10500 is 1500. Since 16 2/3% equals 1/6, the required number satisfies ?/6 = 1500, so ? = 1500 x 6 = 9000. The likely trap is 1500, which is the increase rather than the original quantity on which the percentage is calculated.
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About Percentages
Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
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