Question

Suppose disposable income increases by $2,000 . As a result, consumption increases by $1,500 . Answer the questions based on this information. Where appropriate, enter your answer as a decimal rather than as a percentage.

(a) The increase in savings resulting directly from this change in income is $ ____
(b) The marginal propensity to save (MPS) is The marginal propensity to consume (MPC) is ____

Answer 1

$500

0.25

0.75

Step-by-step explanation:

It is assumed that disposable income is either saved or consumed.

Disposable income = Consumption + Savings

Savings = Disposable income - Consumption

= $2000 - $1500 = $500

MPS = Savings ÷ Income

= 500 ÷ 2000 = 0.25

MPC = Consumption ÷ Income

= 1500 ÷ 2000 = 0.75

MPS + MPC = 1

Alternatively: MPC = 1 - MPS = 1 - 0.25 = 0.75