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Consider two countries Home and Foreign each of which produces two goods butter (B) and

guns (G) using labour and capital. The production possibility frontier at Home is given by

B2+G2= 1while that at Foreign is2B2 +1G2= 1.The preferences of consumers in both

2vp

countries are identical and captured by the following utility function_U=BG.LetB=p

pG

be the relative price of butter.

(a) Compute the equilibrium levels ofBandGconsumed and produced in the Home country

under autarky. What is the corresponding value ofp?(1.5 points)(b) Compute the equilibrium levels ofBandGconsumed and produced in the Foreign country

under autarky. What is the corresponding value ofp?(1.5 points)

(c) Based on your answers to parts (a) and (b) if the two countries open up what will be the

pattern of trade? (1 point)(d) Derive the export-supply curve ofBfor theB-exportingcountry as a function ofp.(2

points)

(e) Derive the import-demand curve ofBfor theB-importingcountry as a function ofp.(2

points)(f) What is the equilibriumpunder free trade? How muchBdoes Home import/export under

free trade? (2 points)

Hint :To findpyou need to solve a non-linear equation inp.You may not be able to do this

using pencil and paper. You can use MS-Excel to do this. For example suppose you have an

equation that looks like this:ap3+bp2+cp+d= 0wherea b canddare constants. Then

pick a value forp.Create separate columns forap3 bp2 cpanddand another column that has

their sum. Then vary the value forpuntil the sum is equal to zero. The correspondingpvalue

is a solution. Keep in mind that non-linear equations typically have more than one solution.