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WAEC Mathematics 2018 Question 8

Question 8

Algebraic Expressions

If F = 9/5 C + 32, find C when F = 98.6

  1. A.30
  2. B.37
  3. C.39
  4. D.41
Show the answer and explanation

Answer: B (37)

Explanation

98.6 − 32 = 66.6 = 9C/5, so C = 66.6 × 5/9 = 37.