What are the two common elements of all rate formulasSolutio

What are the two common elements of all rate formulas?

Solution

A rate is nothing but the ratio between two related quantities. If the denominator of the ratio is expressed as a single unit of one of these quantities, and if it is assumed that this quantity can be changed systematically (i.e., is an independent variable), then the numerator of the ratio expresses the corresponding rate of change in the other (dependent variable. The most common type of rate is \"per unit of time\", such as speed, heart rate and flux. Hence two common elements of all Rate formulas are dependent variableand independent variables.