2. 外语
  3. Juan walked 3 more miles than Rebecca. Rebecca walked 4 times as far as William. William walked 2 miles. Which of the following

Juan walked 3 more miles than Rebecca. Rebecca walked 4 times as far as William. William walked 2 miles. Which of the following

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问题 Juan walked 3 more miles than Rebecca. Rebecca walked 4 times as far as William. William walked 2 miles. Which of the following mathematical expressions is equivalent to the number of miles Juan walked?
选项 A、3×4×2
B、(2 + 4)× 3
C、4(2)+ 3
D、4 + 3 + 2
答案4(2)+ 3
解析 To solve this problem, start with William and work backward. William walked 2 miles, and Rebecca walked 4 times as far as William. Therefore, Rebecca walked 4(2)miles. Juan walked 3 more miles than Rebecca, so Juan walked 4(2)+ 3 miles.
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