Mathematical equation for a 45.90 second lap time at Daytona International Speedway is what?

About four months ago I asked a question of what speed in MPH a lap time of 45.90 seconds at Daytona International Speedway is and the answerer gave me the speed of 196.078 MPH but did not show how he came up with the answer. If someone can come up with the equation which I think is Distance (which in this case is 2.5 miles), either multiplied or divided by time = speed, I think.

If someone could figure that out and show your work, please?

Thank you for your patience.

Remember don't just give me the answer, show me your work.

No Body2011-08-30T12:36:55Z

Favorite Answer

45.90 seconds = 45.90 / 3600 hours

Distance = speed*time
2.5 miles = speed*(45.90 / 3600 hours)
speed = 2.5 / (45.90 / 3600) mph = 196 mph

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