2. 外语
  3. If 10x equals 0.1 percent of 10y, where x and y are integers, which of the following must be true?

If 10x equals 0.1 percent of 10y, where x and y are integers, which of the following must be true?

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问题 If 10x equals 0.1 percent of 10y, where x and y are integers, which of the following must be true?
选项 A、y=x+2
B、y = x + 3
C、x = y + 3
D、y =1,000x
E、x= 1,000y
答案B
解析 The quantity 0.1 percent of m can be expressed asm, which is equal tom, orm. Given that 10x equals 0.1 percent of 10y, it follows that

or 10x= 10y-3. Therefore x = y - 3, or y = x + 3. The correct answer is Choice B.
This explanation uses the following strategies.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
Strategy 5: Simplify an Arithmetic or Algebraic Representation
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本试题收录于： GRE QUANTITATIVE题库GRE分类
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