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Antonia is driving a bus to City $$A$$. When she has driven half the total distance to the city, she notices that she has driven for 12 hours and averaged 35 miles per hour. She was scheduled for 19 hours driving time for the entire journey to City $$A$$. lf she is to arrive exactly on schedule, at what average speed, in miles per hour, must she drive the second half of the distance?
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· 相关考点
2.5.3 时速与距离问题
2.5.3 时速与距离问题
以上解析由 考满分老师提供。
