Suppose that an industry consists of 15 firms, and the top 4 firms have annual sales of $2.5 million, $2 million, $1.5 million, and $1 million, respectively. If the entire industry has annual sales of $10 million, the four-firm concentration ratio is
A. 25 percent.
B. 85 percent.
C. 70 percent.
D. 50 percent.
Answer: C
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The consumer price index (CPI) was 180 for 2009 when using 1995 as the base year (1995 = 100). Now suppose we switch and use 2009 as the base year (2009 = 100). What is the CPI for 1995 with the new base year?
A) 18.0 B) 55.6 C) 80.0 D) 111.2
There is ________ to how much increases in labor inputs can increase real GDP per capita, and there is ________ to how much increases in labor productivity can increase real GDP per capita
A) a limit; a limit B) a limit; no limit C) no limit; a limit D) no limit; no limit
A perfectly competitive firm sells its output for $100 per unit and marginal cost is $100 per unit. To maximize short-run profit, the firm should:
a. increase output. b. decrease output. c. maintain its current output. d. shut down.
For which pair of firms would a merger be horizontal?
a. Avis Rentals and United Airlines b. Rawlings and Nike c. Barnes and Noble and Wordsworth Booksellers d. Starbucks and Baskin and Robbins e. Samuel Adams and Samsonite