What dependence does Engel’s law establish?

Engel’s law. As family income rises, the structure of expenditures changes: the share of expenditures on food decreases, the share of expenditures on meeting cultural needs increases.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.