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If x stands for + stands for +, + stands for + and - stands for x, which one of the following equations is correct? 

  • A.15 - 5 + 6 x 20 + 10 = 6
  • B.8 + 10 - 3 + 5 x 6 = 8 
  • C.6 x 2 + 3 + 12 - 3 = 15
  • D.3 + 7 - 5 x 1 0 + 3 = 10

Answer: B

Correct answer: 8 + 10 – 3 + 5 x 6 = 8

This item cannot be worked as it stands: the list of substitutions in the stem has been damaged, with the same sign appearing against more than one operation and one of the four definitions lost altogether. Until the original wording is restored, no consistent set of replacements can be applied to test the four equations against one another.

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