Sara's income falls from $12 to $9 a week, while the price of popcorn is unchanged at
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Question:
Sara's income falls from $12 to $9 a week, while the price of popcorn is unchanged at $3 a bag and the price of a smoothie is unchanged at $3.What is the effect of the fall in Sara's income on the relative price of a smoothie in terms of popcorn?
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