WAEC Mathematics 2013 Question 14

Question 14

Algebraic Expressions

Given that p⅓ = ∛q/r, make q the subject of the equation.

  1. A.q = p√r
  2. B.q = p3r
  3. C.q = pr3
  4. D.q = pr⅓
Show the answer and explanation

Answer: C (q = pr3)

Explanation

∛q = rp⅓. Cube both sides: q = r3p = pr3.