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If 4y is 9 greater than the sum of y and 3x, by how much...

Mathematics
WAEC 2008

If 4y is 9 greater than the sum of y and 3x, by how much is y greater than x?

  • A. 3
  • B. 6
  • C. 9
  • D. 12
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Correct Answer: Option A
Explanation

4y - 9 > y + 3x; 4y - y > 3x + 9

3y > 3(x + 3); y = > \(\frac{3(x + 3)}{3}\)

y > x + 3; y - 3 > x

y is greater than x by 3


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