JAMB Mathematics 1981 Question 5

Question 5

Inequalities

Find the value of x satisfying x/2 − 1/3 < 2x/5 + 1/6

  1. A.x < 5
  2. B.x > 7½
  3. C.x < 7½
  4. D.x < −5
  5. E.x ≥ 5.
Show the answer and explanation

Answer: A (x < 5)

Explanation

Collect terms: x/2 − 2x/5 < 1/6 + 1/3, so x/10 < 1/2 and x < 5.