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WAEC Mathematics 2008 Question 39

Question 39

Linear and Simultaneous Equations

If p = ½ and 1/(p − 1) = 2/(p + x), find the value of x.

  1. A.−2½
  2. B.−1½
  3. C.1½
  4. D.2½
Show the answer and explanation

Answer: B (−1½)

Explanation

1/(½ − 1) = −2, so 2/(½ + x) = −2, giving ½ + x = −1 and x = −1½.