Suppose that disposable income, consumption, and saving in some country are $200 billion, $150 billion, and $50 billion, respectively. Next, assume that disposable income increases by $20 billion, consumption rises by $15 billion, and saving goes up by $5 billion. a. What is the economy’s MPC?What is its MPS?b. What was the APC before the increase in disposable income?What was the APC after the increase?

The computation is shown below:

Explanation:

The computation is shown below:

As we know that

a) Marginal Propensity to Consume (MPC) = Change in consumption ÷ change in disposable income

MPC = $15 billlion ÷ $20 billion

MPC = 0.75

And,

Marginal Propensity to Save (MPS) = change in saving ÷change in disposable income

MPS = $5 billion ÷ $20 billion

MPS = 0.25

Now

b) Before the increase in disposable income

The average propensity to consume (APC) is

= Consumption ÷ disposable income

= $150 billion ÷$200 billion

= 0.75

And,

After the increase in the disposable income

New disposable income = $200 billion + $20 billion

= $220 billion

And,

New consumption = $150 billion + $15 billion

= $165 billion

So,

APC = New consumption ÷ new disposable income

= $165 billion ÷ $220 billion

= 0.75          

a. primarily outdoors, responding to emergencies and protecting people.

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