This math topic focuses on understanding unit rates and making cost-effective decisions by determining the best price per unit (kg) through fraction comparisons. It is intended to enhance skills in analyzing ratios within the context of practical shopping scenarios, specifically identifying which option offers the lowest price per kilogram. This is part of a broader introduction to ratios involving lengths. Each question presents a decision-making problem about selecting the most economical purchase option based on the given data.
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Which option has the lowest price per kg?