Exercise 3 Consider the following model of the economy C 170 +0.6 (Y-T) に250 G-300 T 200 a. What is the value of the marginal propensity to consume? b. What is the value of the government budget defidt? c. Calculate the equilibrium level of GDP d. What is the value of the government-purchases multiplier? e. Use your answer to Part d to calaulate the amount by which government purchases of goods and services would have to rise in order to increase the equilibrium level of GDP by 50.