The speed is defined as the distance covered per unit time,
Methematically,
[tex]\text{Speed}=\frac{\text{Distance Travelled}}{\text{Time Taken}}[/tex]Given that the distance is 'd' miles, and time taken is 'x' hours, then the speed(s) is given by,
[tex]s=\frac{d}{x}\text{ miles per hour}[/tex]Thus, the relation between the three quantities is established.
