What numerical value corresponds to 80 percent of a figure whose 200 percent equals 90?
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Answer: C. 36
Explanation
If two hundred percent of an unknown figure equals ninety, the base figure must be forty-five. Calculating eighty percent of forty-five requires multiplying forty-five by the decimal factor zero point eight. Multiplying forty-five by zero point eight produces the final correct numerical value of thirty-six. Percentages represent proportional parts calculated relative to a total baseline value of one hundred percent. Dividing ninety by two determines the one hundred percent value of the unknown numerical figure. Fractional multipliers convert percentage figures into direct arithmetic operations for rapid numerical evaluation.
Retail discounting strategies apply percentage calculations to determine sale prices from original manufacturing values. Financial analysts scale quarterly revenue figures using proportional percentage multipliers for comparative reporting. Educational assessment tools utilize percentage scaling to normalize student test scores across various grading curves. Option A suggests one hundred forty-four which results from an incorrect proportional scaling calculation. Option B proposes seventy-two which miscalculates the final eighty percent reduction of the base figure. Option D is incorrect because the correct value of thirty-six is explicitly provided among choices.
- Subject
- Mathematics
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- Mathematics
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