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";="" font-size:="" 14px;"="">A portion of an automobile test track is divided into Segment A, Segment B, and Segment C, in that order. In a performance test on a car, the car traveled Segment A at a constant speed of 140 kilometers per hour (kmh). Immediately after this, the car rapidly slowed on Segment B and then traveled on Segment C at a constant speed of 70 kmh. The length of Segment C is 3 times the length of Segment A, and it took a total of 42 minutes for the car to travel both segments A and C. In the table, select the length of Segment A, in kilometers, and select the length of Segment C, in kilometers. Make only two selections, one in each column.

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    答案:
    4,2

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