A police officer records the speeds of vehicles on a road. What percent of the vehicles were traveling between 51 and 55 miles per hour? A police officer records the speeds of vehicles on a road. What percent of the vehicles were traveling between 51 and 55 miles per hour?

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I think you missed the information for the speed recorded by the police.

Here is my suggestion for the number and way to solve this problem

A police officer records the speeds of vehicles on a road. What percent of the vehicles were traveling between 51 and 55 miles per hour. Speed (miles per hour) & number of vehicles:

- 45-50 : 5

- 51 -55 : 6

- 55- 60 : 3

- 60- 65  : 4                

Number of vehicles travelling at a speed of 51 and 55 miles per hour = 6

and total number of vehicles = 5 + 6 + 3 + 4 = 18

Therefore, the percentage of the vehicles travelling at a speed of 51 and 55 miles per hour is given by:

6/18*100% = 33.33%

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