Question

1. Suppose the multiplier in a given economy is 2.5. If government spending increases by 10, how much will GDP increase by?

10 * 2.5 = 25

2. Again, suppose the multiplier is 2.5. If investment spending falls by 4, what will be the change in GDP?

- Invetment spending falls by 4 --> - 4

2.5 * - 4 = - 10

3. Again, suppose that the multiplier for a given economy is 2.5. The authorities believe that GDP is currently below potential, and would like it to increase by 5. How much should they raise government spending to bring this about?

2. 5 * ___ = 5 ---> 5/2 = 2

Government spending should raise to 2

4. Suppose the marginal propensity to consume in an economy is equal to 0.75. What is the marginal propensity to save?

mpc = 0.75

marginal propensity to save = 1 - 0.75 = 0.25

5. Again, suppose the marginal propensity to consume is 0.75. If GDP increases by 20, what is the change in consumption?

mpc = 0.75

GDP (Y) = 20

C = 0 + 0.75 * 20 = 15

6. Suppose the marginal propensity to consume in an economy is equal to 0.75. If there were no taxes and no foreign trade, what would the multiplier be?

mpc = 0.75

1 - 0.75 = 0.25

0.25 —> 1/4

1 / 1/4 = 4/1 = 4

multiplier = 4

* I would like to know if my answers are correct and if I used the correct formulas to find the answers. Thank you.