List of top Macroeconomics Questions on Business cycles and economic models

In the case of a small open economy with fixed exchange rate regime and imperfect capital mobility, which of the following is/are CORRECT?
Suppose the price elasticity of demand ($e_D $) is − 1/5 and the price elasticity of supply ($e_s$ ) is 2/5 . Then, the incidence of a specific (or unit) tax on the firms is equal to
Consider a Keynesian Cross Model with following features,
Consumption Function: C = C0 + b(Y-T) 
Tax Function: T = T0 + tY 
Income Identity: Y = C + I0 + G0 
Where, C = Consumption; Y = Real Income; T = Tax; I = Investment; 
G = Government Expenditure; b = Parameter; t = Tax Rate 
(The subscript 0 (zero) indicates that the concerned variable is autonomous) 
If b = 0.7 and t = 0.2, value of the Keynesian multiplier is ________ (round off to 2 decimal places).
For a positively sloped LM curve, which of the following statements is CORRECT?
Which of the following statements is NOT CORRECT in the context of an Open Economy IS-LM Model under Floating Exchange Rate (with fixed price) and Perfect Capital Mobility?
The following table provides a list of countries selling Big Mac and market exchange rates in January 2019.
Country

Big Mac
(Price in local currency)

Market Exchange Rate
(Local currency per USD)

United States5.58 USD1.00
Norway50.00 Kroner8.53 Kroner/USD
Japan390.00 Yen108.44 Yen/USD
Mexico49.00 Pesos17.31 Pesos/USD
China20.90 Yuan6.85 Yuan/USD
Russia110.17 Rubles66.69 Rubles/USD
India178.00 Rupees69.69 Rupees/USD

Using the above information, the cheapest price (in USD) of Big Mac is _______ (round off to 2 decimal places).