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1.4: Rates and Speed
Overview: A rate is a comparison of different quantities.
Speed is commonly used to refer to how fast a person can move, there are many formulas to work out speed.
Average speed: To calculate average speed you must do the following:Calculate the average speed of a car that travels 180km in 5 hours:Steps:
1. Write the formula for calculating the average speed. Average speed = distance : time taken
2. Substitute the values for distance a time. d= 180km, t= 5hours.Average speed = 180 : 53.