Money serves as a medium of exchanging goods and services. People sell goods for money and use the money for buying goods they want. It has removed the problem of double coincidence of wants faced in the Barter System.
Detailed Answer:
Money, as a medium of exchange, means that it can be used to make payments for all transactions of goods and services. It is the most essential function of money. Money has the quality of general acceptability. So, all exchanges take place in terms of money. This function has removed the major difficulty of lack of double coincidence of wants and inconveniences associated with the barter system. Use of money allows purchase and sale to be conducted independently of one another. This function of money facilitates trade and helps in conducting transactions in an economy. Money has no power to satisfy human wants, but it commands power to purchase those things, which have utility to satisfy human wants.
