Q30:
Printwell’s Ink Jet Division manufactures ink-jet printers and the
ink cartridges they use. Sales of its ink-jet printers have
increased. Monthly revenues from those sales, however, have not
increased, because competition has forced Printwell to cut the
prices of its printers. Unfortunately, Printwell has been unable
to bring down the cost of manufacturing a printer. Thus, despite
the increase in printer sales, the Ink Jet Division must be
providing the company with much smaller than it used to.
Which of the following, if true, most seriously weakens the
argument?
A. Ink-jet printers in regular use frequently need new ink
cartridges, and Printwell’s printers only accept Printwell’s ink
cartridges.
B. Unlike some competing companies, Printwell sells all of its
printers through retailers, and these retailers’ costs account for
a sizable proportion of the printers’ ultimate retail price.
C. Some printer manufacturers have been forced to reduce the sale
price of their ink-jet printers even more than Printwell has.
D. In the past year, no competing manufacturer of ink-jet printers
has had as great an increase in unit sales of printers as Printwell
has.
E. In the past year, sales of Printwell’s ink-jet printers have
increased more than sales of any other type of printer made by
Printwell.
Answer: a
i choose c | 
