Explain why the marginal propensity to save and the marginal propensity to consume sum to 1.

Consider the table given below. The marginal propensity to consume is a.0.2 b.0.4 0.0.6 d.0.8 National Income (GDP) Consumption Investment Government Expenditure 0 500 1,000 1,500 2.000 2,500 3.000 3,500 400 800 1.200 1.600 2,000 2,400 2,800 3.200 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

Which of the following correctly describes how a decrease in the price level affects consumption spending? Select one: a. A decrease in the price level raises real wealth, which causes consumption to increase. b. A decrease in the price level decreases the amount of money a household needs to buy goods and so raises the interest rate, which causes consumption to increase. c. A decrease in the price level increases the amount of money a household needs to buy goods and so raises the interest rate, which causes consumption to increase. d. A decrease in the price level lowers real wealth, which causes consumption to decrease.

In an economy the value of Marginal propensity to save Is 0.21 Calculate the value of Marginal propensity to consume