71.
Effective demand depends upon

72.
Quantity demanded is a

73.
At shut down point

75.
The other name of Budget line is

76.
Normal goods have

77.
If the goods are complementary like car and petrol, their cross elasticity is

78.
Identify the factor which generally keeps the price-elasticity of demand for a good high.

79.
The slope of indifference curve indicates

80.
The total area under the demand curve of good measures