問題詳情
4. Countries A, B and C produce only watermelons (X) and grapefruits (Y). The productionpossibility frontiers are given by: XA + YA = 100, 2XB +3YB = 300, XC +2YC = 600. What is themaximum amount of watermelons that they can produce together if they want to produce at least200 grapefruits?
(A) 200
(B) 500
(C) 600
(D) None of the above
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增