【GMAT考满分数学PS题库】January (A), February (B) and March (C) total $120_真题_答案_解析 GMAT考满分官网

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January (A), February (B) and March (C) total $1200. Where A: (B + C) = 5:7, B: (A + C) = 9:15 how much is March?

A200
B220
C250
D450
E500

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正确答案: C

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