Variation is mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other
Rates deal with comparison of two quantities of different kind eg. time and distances.
Variation is mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other
Variation is mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other