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WAEC Mathematics 1995 Question 13

Question 13

Inequalities

Solve the inequality: 1/3(2x − 1) < 5.

  1. A.x < −5
  2. B.x < −6
  3. C.x < 7
  4. D.x < 8
  5. E.x < 16
Show the answer and explanation

Answer: D (x < 8)

Explanation

Multiply by 3: 2x − 1 < 15, so 2x < 16 and x < 8.