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If 2\(_9\) x (Y3)\(_9\) = 3\(_5\) x (Y3)\(_5\), find the value of Y.

Mathematics
JAMB 1999

If 2\(_9\) x (Y3)\(_9\) = 3\(_5\) x (Y3)\(_5\), find the value of Y.

  • A. 4
  • B. 3
  • C. 2
  • D. 1
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Correct Answer: Option D
Explanation

(2 x 9 \(^0\) ) (Y x 9 \(^1\)+ 3 x 9\(^0\)) = (3 x 5 \(^0\))(Y x 5\(^1\) + 3 x 5\(^0\)).

(2 * 1)(Y *9 + 3) = (3 * 1)(Y * 5 + 3)
18y + 6 = 15y + 9 

18y - 15y = 9 - 6 

3y = 3

y = 1


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