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Q. The space mean speed (kmph) and density (vehicles/km) of a traffic stream are linearly related. The free flow speed and jam density are 80 kmph and 100 vehicles/km respectively. The traffic flow (in vehicles/h, up to one decimal place) corresponding to a speed of 40 kmph is
Ans: 2000
Sol:
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/image-84.png)