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mofa留学圈
The traffic that passes through a certain location is composed exclusively of the following nonoverlapping types of vehicles: “rural cars,” “urban cars,” “business day trucks,” and “through trucks.” For each of these vehicle types, and for each hour of the day, the graph depicts the typical percentage of the total number of the given type of vehicle passing through the location during that hour. For example, the graph indicates that slightly less than 8 percent of all urban cars that pass through the location on a typical day do so during hour 9.On the basis of the given information, select from each of the drop-down menus the option that makes the statement most accurate.From hour 17 to hour 22, the percent change in number of business day trucks passing through the location .Assuming that total traffic over the day is the same for each of the four vehicle types, the hour of maximum total traffic is .
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