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Yoram insists on consuming 3 times as much y as he consumes of x(so he always has y = 3x).He will consume these goods in no other ratio.The price of x is 2 times the price of y.Yoram has an endowment of 24 x0s and 42 y0s which he can trade at the going pr

Yoram insists on consuming 3 times as much y as he consumes of x(so he always has y = 3x).He will consume these goods in no other ratio.The price of x is 2 times the price of y.Yoram has an endowment of 24 x0s and 42 y0s which he can trade at the going prices.He has no other source of income.What is Yoram';s gross demand for x?
A.90
B.66
C.18
D.16
正确答案:18