how does money act as medium of exchange?
Money acts as a medium of exchange as it is a link between the exchange of commodities . Earlier in the barter system , double coincidence of wants was an essential feature that made difficult for the buyers to find person who buys his commodity at the same time wishes to sell a commodity of the buyer's choice , But now since money does not have it's own value in modern times it's key role is of a " medium" of exchange .