Question

by what is double coincidence of wants is needed.​

Answer 1

★It refers to the situation when the goods a seller wants to sell is wanted by a buyer and the thing or assest that buyer have is need of seller.

★In simple words,this is based on Barter System.

Answer 2

Answer:

Double coincidence of wants means that both of the parties have to agree to sell and buy each commodity. Under this system, problems arise through the improbability of the wants, needs, or events that cause or motivate a transaction occurring at the same time and the same place.