71.
The average profit is the difference between

72.
At the point of inflexion, the marginal product is

73.
Marginal revenue will be negative if elasticity of demand is

74.
If lowering of fares reduces railway's revenues and increasing of fares increases, then the demand for rail travel has a price elasticity of

75.
If the marginal (additional) opportunity cost is a constant then the PPC would be

76.
If a good is a luxury, its income elasticity of demand is

77.
When ____, we know that the firms must be producing at the minimum point of the average cost curve and so there will be productive efficiency.

78.
Suppose the demand for meals at a medium-priced restaurant is elastic. If the management of the restaurant is considering rasiing prices, it can expect a relatively

79.
Which of the following is not a characteristic of a 'price taker'?

80.
In monopolistic competition, a firm is in long run equilibrium