How do you get 5: 2 or 5: 1 as a ratio of 10 pencils and 2 erasers

people went from manufacturing one object at a time by hand to manufacturing many objects in factories

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.