WAEC Mathematics 2013 Question 11

Question 11

Indices

If x = 64 and y = 27, calculate: (x½ − y⅓)/(y − x⅔)

  1. A.2⅕
  2. B.1
  3. C.5/11
  4. D.11/43
Show the answer and explanation

Answer: C (5/11)

Explanation

x½ = 8, y⅓ = 3, x⅔ = 16. (8 − 3)/(27 − 16) = 5/11.