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MGSM / 戴娜跑步的速度是步行速度的四倍,但她跳跃的速度是跑步速度的一半。如果她每小时能跳跃 3 英里,则在 6 小时的时间里,她用三分之一的时间跑步,用三分之二的时间步…

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戴娜跑步的速度是步行速度的四倍,但她跳跃的速度是跑步速度的一半。如果她每小时能跳跃 3 英里,则在 6 小时的时间里,她用三分之一的时间跑步,用三分之二的时间步行,她完成了多长的距离?

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