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Because of the convexity assumption—that MRSBW must diminish as he moves toward more bread and less wine—the MRSBW is continuously changing as he moves along his indifference curve.
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3. UTILITY THEORY: MODELING PREFERENCES AND TASTES
e. If, at some point, the slope of the indifference curve had value –2.5, it means that, starting at that particular bundle, our consumer would be willing to sacrifice wine to obtain bread at the rate of 2.5 ounces of wine per slice of bread. <span>Because of the convexity assumption—that MRS BW must diminish as he moves toward more bread and less wine—the MRS BW is continuously changing as he moves along his indifference curve. EXAMPLE 2 Understanding the Marginal Rate of Substitution Tom Warren currently has 50 blueberries and 20 peanuts. His marginal rate of substitution