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
AMC 8 1990 Problem 24 figure
  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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