<P> In microeconomics , the law of demand states that , `` conditional on all else being equal , as the price of a good increases ( ↑ ) , quantity demanded decreases ( ↓ ) ; conversely , as the price of a good decreases ( ↓ ) , quantity demanded increases ( ↑ ) '' . In other words , the law of demand describes an inverse relationship between price and quantity demanded of a good . Alternatively , other things being constant , quantity demanded of a commodity is inversely related to the price of the commodity . For example , a consumer may demand 2 kilograms of apples at Rs 70 per kg ; he may , however , demand 1 kg if the price rises to Rs 80 per kg . This has been the general human behaviour on relationship between the price of the commodity and the quantity demanded . The factors held constant refer to other determinants of demand , such as the prices of other goods and the consumer 's income . There are , however , some possible exceptions to the law of demand , such as Giffen goods and Veblen goods . </P>
<P> In microeconomics , the law of demand states that , `` conditional on all else being equal , as the price of a good increases ( ↑ ) , quantity demanded decreases ( ↓ ) ; conversely , as the price of a good decreases ( ↓ ) , quantity demanded increases ( ↑ ) '' . In other words , the law of demand describes an inverse relationship between price and quantity demanded of a good . Alternatively , other things being constant , quantity demanded of a commodity is inversely related to the price of the commodity . For example , a consumer may demand 2 kilograms of apples at Rs 70 per kg ; he may , however , demand 1 kg if the price rises to Rs 80 per kg . This has been the general human behaviour on relationship between the price of the commodity and the quantity demanded . The factors held constant refer to other determinants of demand , such as the prices of other goods and the consumer 's income . There are , however , some possible exceptions to the law of demand , such as Giffen goods and Veblen goods . </P>
according to the law of ​ demand a decrease in the price of a good causes
according to the law of ​ demand a decrease in the price of a good causes
quantity demanded increases
quantity demanded increases