Question

In Macroland, autonomous consumption equals 100, the marginal propensity to consume equals 0.75, net taxes are fixed at 40, planned investment is fixed at 50, government purchases are fixed at 150, and net exports are fixed at 20. Short-run equilibrium output in this economy equals:___________. A.1,000. B.1,160. C.1,280. D.1,440.

Answer 1

Answer:

B) 1,160.

Explanation:

First we must calculate planned aggregate expenditures (PAE) and then determine where Y = PAE:

PAE = consumption + planned investment + government spending + net exports = 100  + 0.75(Y - 40) + 50 + 150 +20 = 100 + 0.75Y - 30 + 50 + 150 + 20 = 290 + 0.75Y

Now we must determine where Y and PAE intercept:

Y = 290 + 0.75Y

Y - 0.75Y = 290

0.25Y = 290

Y = 290 / 0.25 = 1,160

*Planned aggregate expenditure = total planned spending, it differs from GDP because GDP includes unplanned investment.

PAE = C + Ip + G + NX   while  GDP = C + I + G + NX