Suppose Ernie gives up his job as a financial advisor for pets, for which he earned $30,000 per year, to open up a store selling spot remover to Dalmatians. He invested $10,000 of his savings, which had been earning 5 percent interest. This year's revenues in the new business were $50,000 and explicit costs were $10,000 . Calculate Ernie's economic profit
a. $10,000
b. $50,000
c. $20,000
d. $40,000
e. $9,500
E
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Which of the following statements is true?
A) If both demand and supply increase there must be an increase in equilibrium price; equilibrium quantity may either increase or decrease. B) An increase in supply causes a change in equilibrium price; the change in price does not cause a further change in demand or supply. C) If demand decreases and supply increases one cannot determine if equilibrium price will increase or decrease without knowing which change is greater. D) A decrease in supply causes equilibrium price to rise; the increase in price then results in a decrease in demand.
If the demand for a monopolist's product increases, its
A) marginal revenue increases, making it more profitable to hire more workers. B) marginal revenue increases, making it more profitable to hire fewer workers. C) marginal revenue decreases, making it more profitable to hire more workers. D) marginal revenue decreases, making it more profitable to hire fewer workers.
Average costs
a. fall at all levels of output b. are falling when marginal costs are below average costs and rising when marginal costs are above average costs c. are falling when marginal costs are above average costs and rising when marginal costs are below average costs d. does not vary with output
Any increase in efficiency increases output available for distribution
a. True b. False Indicate whether the statement is true or false