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Given that \(\log_{2} y^{\frac{1}{2}} = \log_{5} 125\), find the value of y.

Further Mathematics
WAEC 2007

Given that \(\log_{2} y^{\frac{1}{2}} = \log_{5} 125\), find the value of y.

  • A. 16
  • B. 25
  • C. 36
  • D. 64
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Correct Answer: Option D
Explanation

\(\log_{2} y^{\frac{1}{2}} = \log_{5} 125\)

\(\log_{2} y^{\frac{1}{2}} = \log_{5} 5^{3} = 3\log_{5} 5 = 3\)

\(\log_{2} y^{\frac{1}{2}} = 3 \implies y^{\frac{1}{2}} = 2^{3} = 8\)

\(y = 8^{2} = 64\)


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