90 represents what percentage of 120?
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Answer: C. 75%
Explanation
Dividing the part value of 90 by the whole baseline value of 120 gives a decimal quotient of 0.75. Converting the decimal 0.75 to a percentage by multiplying by one hundred yields exactly 75 percent. Proportional division confirms that 90 constitutes three-quarters of the total quantity of 120. Percentages express numbers as fractions of one hundred, representing relative proportions of a whole. Calculating a percentage involves dividing the target part by the total reference whole and multiplying by 100. Basic proportion principles govern all standard percentage increase and decrease calculations.
Retail discounting and financial calculations frequently require finding what percentage one number is of another. Test grading systems convert raw score points into percentage grades using this exact mathematical operation. This foundational arithmetic skill is essential for quantitative reasoning across diverse academic and professional fields. Option A underestimates the percentage, representing only one-quarter of the total reference value. Option B represents 50 percent, which corresponds to half of the total baseline value of 120. Option D represents a lower fractional percentage that fails to match the calculated ratio of 0.75.
- Subject
- Mathematics
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- Mathematics
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- —
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