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WAEC Mathematics 2004 Question 4

Question 4

Linear and Simultaneous Equations

Solve for t in the equation 3/4 t + 1/3 (21 − t) = 11,

  1. A.9/13
  2. B.9/13
  3. C.5
  4. D.9 3/5
Show the answer and explanation

Answer: D (9 3/5)

Explanation

Multiply by 12: 9t + 4(21 − t) = 132, so 5t = 48 and t = 9 3/5.