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WAEC Mathematics 2014 Question 10

Question 10

Linear and Simultaneous Equations

Three quarters of a number added to two and a half of that number gives 13. Find the missing number.

  1. A.4
  2. B.5
  3. C.6
  4. D.7
Show the answer and explanation

Answer: A (4)

Explanation

¾n + 2½n = 13 gives (13/4)n = 13, so n = 4.