Answer: e. the marginal propensity to consume decreases from 0.7 to 0.6
Step-by-step explanation:
Calculate the marginal propensity to consumer when the disposable income is increased from $2,000 to $3,000 to $4,000.
The Marginal propensity to consume is calculated by the formula:
= Change in consumption / Change in income
When disposable income increased from $2,000 to $3,000.
= (2,900 - 2,200) / (3,000 - 2,000)
= 0.7
When disposable income increased from $2,000 to $3,000.
= (3,500 - 2,900) / (4,000 - 3,000)
= 0.6
The marginal propensity to consume decreased from 0.7 to 0.6.