Given the following model for planned aggregate expenditures in a closed economy, answer the following questions:

Ct = 150 + 0.90(Yt - Tt

)

It = 250 - 10(it

)

Gt = 250 Tt = 50 + 0.10(Yt - 1)

Dt = 50 where Ct Total planned consumption expenditures in year t Yt National income in year t Tt Total personal taxes due in year t Gt Total government spending in year t Dt Depreciation in year t it The current market rate of interest

a. What is the equilibrium level of national output in the current year (year t) if the market rate of interest is 6% and national income in the previous year (year t - 1) was 3,000?

(Hint: use 6.0 instead of 0.06 as the value for the market rate of interest.)

b. What is the level of consumption in the current year (year t)?

c. What is the level of savings in the economy in the current year?