20刀的红利也有一年利息的，易懂的公式是 100(1+r)^2 = 20(1+r) + 90, r = 5.39%

来源: mjnew 于 2023-01-18 16:56:12 [旧帖] [给我悄悄话] 本文已被阅读：次

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20刀的红利也有一年利息的，易懂的公式是 100*(1+r)^2 = 20*(1+r) + 90, r = 5.39%