Sandrine is now 5 times as old as Nicholas, but 7 years from now, she will be 3

游客2025-02-24 40

问题 Sandrine is now 5 times as old as Nicholas, but 7 years from now, she will be 3 times as old as he will be then. How old is Sandrine now?

选项 A、15
B、20
C、21
D、25
E、35

答案 E

解析

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