Question 1149073
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The way on how you do formulate the question, confounds every tutor and every English speaking person.


Why do not ask "what it the velocity at 3:15 pm, in miles per hour ?"


It is THE STANDARD WAY to pose a question in this case . . . 



To formulate problems as you do is not only grammatically incorrect --- it is IMPOLITE, too . . . 


There is no ANY DESIRE to answer questions formulated in this way.