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Rafael's marginal propensity to save equals 0.25. In 2007 Rafael saved $4,000 of his $20,000 disposable income. If in 2008, his disposable income increased to $30,000, his savings increased by
Rafael's marginal propensity to save equals 0.25. In 2007 Rafael saved $4,000 of his $20,000 disposable income. If in 2008, his disposable income increased to $30,000, his savings increased by
