JAMB Mathematics 2012 Question 16

Question 16

Inequalities

The value of y for which (1/5)y + 1/5 < (1/2)y + 2/5 is

  1. A.y > 2/3
  2. B.y < 2/3
  3. C.y > −2/3
  4. D.y < −2/3
Show the answer and explanation

Answer: C (y > −2/3)

Explanation

Multiply by 10: 2y + 2 < 5y + 4, so −3y < 2 and y > −2/3.