Use the formula triangle to establish the correct calculation by covering up what needs to be worked out. To work out speed, cover the S. To work out distance, cover the D. To work out time ...

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m ...

it includes a short shift at work. According to the experts, the formula for the perfect day is six hours of family time, two hours spent with friends, 1.5 hour socialising, two hours ...