Author: papgust Posted: Wed Nov 18, 2009 1:06 am (GMT -8) farooq wrote: For a certain company, operating costs and commissions totaled $550 million in 1990, representing an increase of 10 percent from the previous year. The sum of operating costs and commissions for both years was[/b] (A) $1,000 million (B) $1,050 million (C) $1,100 million (D) $1,150 million (E) $1,155 million 550 million $ is the current year total of operating costs and commissions after a 10% increase from the previous year. Assume previous year’s operating costs and commissions = x Therefore, 550 = 1.1 * x x=500 The sum of operating costs and commissions for both years = 500 + 550 = 1050 million (B)
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Problem Solving :: RE: ETS questions: Plz share Solving Tricks/Methods