The following information is available within a Keynesian income-expenditure framework of the economy,where Yd is disposable income, t is the marginal tax rate and T is the government’s tax revenue:
C=120+0.75Yd I=55 G=35 T=tY t=0.2 Yd=(1-t)Y By how much should the government increase its expenditure to raise national income up to a level of 610?