3 某人對咖啡(X)與茶(Y)的效用函數為 U = 2X+Y,而咖啡與茶的價格皆為 50。若此人的所得為 1,000,則其最適選擇為何?
(A) X = 5,Y = 15
(B) X = 10,Y = 10
(C) X = 20,Y = 0
(D) X = 0,Y = 20
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統計: A(2), B(3), C(21), D(3), E(0) #3564605
統計: A(2), B(3), C(21), D(3), E(0) #3564605