For questions 67 to 71. refer to the following equations: Consumption expenditure: C=100+0.8Yy Lump-sum constant taxes: | T =100 Investment expenditure: [=1100200i Exports: [ X=50 Government expenditure: G=100 Imports: | M=20 Money demand MP=100- 1000i Money supply: | M3= 50 Where i is the interest rate, Y is the real GDP; Yais the disposable income 67. What is the equilibrium Y? a. 5,850 b. 6,750 c. 7,000 d. 8,310 e. None of the above 68. What is the equilibrium saving? a. 4,980 b. 5,774 c. 6,213 d. 6,450 e. 1,220 69. Suppose G rises by 100 $ because of increased expenditure on education. What is the new equilibrium Y? a. 6,700 b. 7,700 c. 8,300 d. 4,400 e. 4,600 70. As Government spending on education increased by 100 $, suppose educational service workers spend their new income on clothing, following the equations given above. This round 2 effect implies that ___ dollars clothing will be produced. a. 50 b. 60 c. 80. d. 70 e. 100 71. Continue from question 69 & 70: If we continue with these rounds, we expect the total increase in Y to be equalto a. 100. b. 500. c. 420. d. 450 e. None of the above