WAEC Mathematics 2017 Question 9

Question 9

Linear and Simultaneous Equations

Solve the equation: 1/5x + 1/x = 3.

  1. A.⅕
  2. B.⅖
  3. C.⅗
  4. D.⅘
Show the answer and explanation

Answer: B (⅖)

Explanation

1/(5x) + 5/(5x) = 6/(5x) = 3, so 15x = 6 and x = ⅖.