2.) The country of Albanystan (country A) forms a small open economy on its own. It has savings SA = 30 +300r and investment IA = 80 - 200r.                a.) If r = 0.2, is country A a borrower or a lender?               b.) Below what interest rate would country A be a borrower? The country of Bostonland (country B) decides to join and together they form a large open economy with SB = 40 + 100 and IB = 5 - 500r  c.) What is the equilibrium interest rate? d. )What is CAA and CAB e.)Which country borrows and which country lend?

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Chapter7: Economic Growth: Theory And Policy
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2.) The country of Albanystan (country A) forms a small open economy on its own. It has savings SA = 30 +300r and investment IA = 80 - 200r.

               a.) If r = 0.2, is country A a borrower or a lender?

              b.) Below what interest rate would country A be a borrower?

The country of Bostonland (country B) decides to join and together they form a large open economy with SB = 40 + 100 and IB = 5 - 500r 

c.) What is the equilibrium interest rate?

d. )What is CAand CAB

e.)Which country borrows and which country lend?

The country of Cincinnatisland (country C) joins country B to form a large open economy, while country A forms a small open economy on its own with Sc = 50 + 200r and Ic = 25 - 400r.        

f.) What is the new equilibrium interest rate?

g.) Is country A a borrower or a lender?

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