question 3
select the option with the lowest unit price for toilet paper.

12 rolls for $6.99
48 rolls for $25.99
6 rolls for $3.19
24 rolls for $13.29

Question

question 3
select the option with the lowest unit price for toilet paper.

12 rolls for $6.99
48 rolls for $25.99
6 rolls for $3.19
24 rolls for $13.29

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Unit Price Comparison" ], "new_concepts": [], "current_concepts": [ "Unit Price Comparison", "Decimal Arithmetic" ] } ## Calculate the unit price for each option Using the *Unit Price Comparison* knowledge point $$ \begin{aligned} &\text{Option 1 (12 rolls): } \frac{\$6.99}{12} \approx \$0.5825 \text{ per roll} \ &\text{Option 2 (48 rolls): } \frac{\$25.99}{48} \approx \$0.5415 \text{ per roll} \ &\text{Option 3 (6 rolls): } \frac{\$3.19}{6} \approx \$0.5317 \text{ per roll} \ &\text{Option 4 (24 rolls): } \frac{\$13.29}{24} \approx \$0.5538 \text{ per roll} \end{aligned} $$ ## Compare the unit prices to find the lowest Using the *Unit Price Comparison* knowledge point $$ \begin{aligned} &\$0.5317 < \$0.5415 < \$0.5538 < \$0.5825 \ &\text{Lowest unit price: } \$0.5317 \text{ per roll (6 rolls for \$3.19)} \end{aligned} $$

12 rolls for $6.99

48 rolls for $25.99

6 rolls for $3.19

24 rolls for $13.29

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Unit Price Comparison" ] }

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QUESTION IMAGE

Question

Explanation:

Calculate the unit price for each option

Compare the unit prices to find the lowest

Answer: