Unilorin Post-UTME Mathematics 2022 (Model questions) Question 6

Question 6

Variation

y is inversely proportional to x and y = 6 when x = 7. Find the constant of the variation.

  1. A.48
  2. B.47
  3. C.54
  4. D.42
Show the answer and explanation

Answer: D (42)

Explanation

y = k/x, so k = xy = 7 × 6 = 42.