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WAEC Mathematics 2018 Question 10

Question 10

Algebraic Expressions

If x : y : z = 2 : 3 : 4, evaluate (9x + 3y)/(6z − 2y).

  1. A.1½
  2. B.2
  3. C.2½
  4. D.3
Show the answer and explanation

Answer: A (1½)

Explanation

Put x = 2, y = 3, z = 4: (18 + 9)/(24 − 6) = 27/18 = 1½.