if a car travels 725 miles in 12.5 hours, find its average linear speed

To get the average linear speed of a car, multiply miles traveled over given number of hours by meters per second. The formula of speed can be written as s=d/t while linear speed is measured as m/s. Substitute the given using the formula s=d/t.
s=d/t
s=725 miles/12.5 hours
s=58 miles/ hours
Since there's 1609.344 meters in 1 mile and 60 minutes in 1 hour and 60 seconds in 1 minute multiply 725 miles/12.5 hours by 1609.344 meters/mile by 1 hour/60 minutes by 1 minute/ 60 seconds.
> 725 miles/12.5 hours *1609.344 meters/1mile* 1 hour/60 minutes* 1 minute/ 60 seconds
> 725 /12.5 *1609.344 meters/1* 1/60* 1/ 60 seconds
> 725 /12.5 *1609.344 meters/1* 1/3600seconds
> 725 /12.5 *1609.344 meters/1* 1/3600seconds
> 725 /12.5 *(1397/3125) meters/second
> 725 /12.5 *0.44704 meters/second
> 81026/3125 or 25 2901/3125 or 25.92832 meters/second
The average linear speed of the car is 25.92832 meters/second