AMC 8 1990 Problem 24

AMC8 1990 年第 24

方程与不等式★★★★
Three Δ\Delta 's and a \diamondsuit will balance nine \bullet 's. One Δ\Delta will balance a \diamondsuit and a \bullet. How many \bullet 's will balance the two \diamondsuit 's in this balance?
三个 Δ\Delta 和一个 \diamondsuit 能平衡九个 \bullet。一个 Δ\Delta 能平衡一个 \diamondsuit 和一个 \bullet。 此天平中,多少个 \bullet 能平衡两个 \diamondsuit
  1. A.1
  2. B.2
  3. C.3
  4. D.4
  5. E.5

正确答案 · Correct Answer

C

解析 · Solution

解析整理中

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