John,a bachelor,after reading a book on homemaking,suddenly becomes twice as productive in doing household chores.This will likely make his indifference curves (between income on the vertical axis and household time on the horizontal axis)become

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With John becoming more productive in doing household chores, the opportunity cost of household time reduces, making him willing to trade off more income for leisure time. This makes his indifference curves steeper because the marginal rate of substitution (MRS) between income and household time increases.

John,a Bachelor,after Reading a Book on Homemaking,suddenly Becomes Twice as Productive