Problem-Solving and Data AnalysisEasy–MediumUnit price
Problem-Solving and Data Analysis practice question
A 5-kilogram bag of rice costs $12.50. What is the cost per kilogram?
- A. $2.50Correct
- B. $0.40
- C. $62.50
- D. $7.50
Answer: A. $2.50
Cost per kilogram means total cost divided by kilograms: 12.50 / 5 = 2.50 dollars per kilogram.
Why the other answers are wrong
- B. $0.40
- 0.40 is 5 / 12.50 — kilograms per dollar, the ratio upside down.
- C. $62.50
- 62.50 is 12.50 × 5. A unit price divides the cost by the quantity; it doesn't multiply.
- D. $7.50
- 7.50 is 12.50 − 5. Subtracting mixes dollars and kilograms; the per-unit cost is a division.
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