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Guesstimate Example # 8 | Speed breakers are a major cause of accidents in an urban area. How many do you think exist in the city in which you reside? –Taking City as Gurgaon

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Q. Speed breakers are a major cause of accidents in urban areas. How many do you think exist in the city in which you reside? –Taking City as Gurgaon

No. of sectors in Gurgaon = 70

No. of roads in each sector = 100

Length of the road:
urban = 200m
rural = 100m

The area by %age of the city:
40% = rural
60% = urban

By taking weighted mean, average length of roads:

0.4×100 + 0.6×200 = 160

No. of speed breakers in each road = 2

Total no. of speed breakers in the city = 2x100x70 = 14,000 speed-breakers

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