WAEC Mathematics 2009 Question 36

Question 36

Inequalities

If x is a positive integer, list the values of x which satisfy the equations 3x − 4 < 6 and x − 1 > 0.

  1. A.{1, 2, 3}
  2. B.{2, 3}
  3. C.{2, 3, 4}
  4. D.{2, 3, 4, 5}
Show the answer and explanation

Answer: B ({2, 3})

Explanation

3x < 10 gives x < 3⅓ and x − 1 > 0 gives x > 1. The integers between are 2 and 3.