A) \[\frac{Ranjge\,\,of\,\,speed}{2\times Mean\,\,speed}\]
B) \[\frac{2\times Mean\,\,speed}{Ranjge\,\,of\,\,speed}\]
C) \[Mean\,\,speed\times Ranjge\,\,of\,\,speed\]
D) \[\frac{Ranjge\,\,of\,\,speed}{Mean\,\,speed}\]
Correct Answer: C
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