Solution:
15. Formula of complete growth for such production function is:
GDP growth rate = TFP growth rate + 0.3*capital growth rate + 0.7*labor growth rate
0.05 = TFP growth rate + 0.3*0.02 + 0.7*0.02
TFP growth rate = 0.05 - 0.02 = 0.03 or 3%
So, correct option is (b) 3.0%.
16. Denoting alpha by a, for ease of writing. With constant A and doubled K and L, new production becomes:
Y' = A*(2K)a*(2L)1-a
Y' = A*2a+(1-a)*KaL1-a
Y' = 2(A*Ka*L1-a) = 2Y, so twice the old output.
Thus, correct option is (a) Double.
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