Macro economics is the study of aggregates. Give reasons.
Macroeconomics is the study of aggregates; as it studies the economy as a whole, rather than the individual economic units as a consumer or a producer.
Why is micro economics called price theory?
Microeconomics is often called price theory to emphasize the important role that prices play in determining market outcomes. Microeconomics explains how the actions of all buyers and sellers determine prices and how prices influence the decisions and actions of individual buyers and sellers.