A car journey of 180 miles takes 3 hours. Find the average speed of the car. Draw the formula triangle. Working clockwise from the top, enter D (distance), T (time) and S (speed). Image caption ...

For example, the formula for calculating speed is speed = distance ÷ time. It is possible to calculate the speed, distance or time if you have the other two values. The formula for speed is speed ...

Use the formula: Speed = file size / transfer time, to calculate your data transfer speed. For example, if a 2GB file took 40 seconds to transfer, your calculation should look like this ...