Problem-Solving and Data AnalysisMediumComparing unit prices
Problem-Solving and Data Analysis practice question
A 3-kilogram bag of rice costs $7.50, and a 5-kilogram bag of the same rice costs $12.00. Which statement is true?
- A. The 5-kilogram bag is the better value, at $2.40 per kilogram compared with $2.50.Correct
- B. The 3-kilogram bag is the better value, at $2.50 per kilogram compared with $2.40.
- C. The two bags cost the same per kilogram.
- D. The 3-kilogram bag is the better value because it costs less in total.
Answer: A. The 5-kilogram bag is the better value, at $2.40 per kilogram compared with $2.50.
Unit prices: 7.50/3 = $2.50 per kilogram; 12.00/5 = $2.40 per kilogram. The larger bag costs less per kilogram.
Why the other answers are wrong
- B. The 3-kilogram bag is the better value, at $2.50 per kilogram compared with $2.40.
- The unit prices are stated correctly here, but $2.50 is MORE than $2.40, so the 3-kilogram bag is the worse value.
- C. The two bags cost the same per kilogram.
- $2.50 and $2.40 per kilogram are different.
- D. The 3-kilogram bag is the better value because it costs less in total.
- A lower total for a smaller bag doesn't make it better value; compare price per kilogram.
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