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An escalator installed at a new shopping mall operates at a speed of 90 feet per minute. The handrail of the escalator operates on a separate motor at a speed of 93 feet per minute. A person steps onto the escalator and, at the same time, grabs the handrail. Assuming that the person's hand and shoes do not move on the escalator in how many seconds will the person's hand have moved 0.25 foot more than the person's shoes?
_____seconds
_____seconds
5 显示答案
· 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。
