To determine which fractions are equivalent to \( \frac{1}{5} \), we can simplify or cross-multiply each given fraction:
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\( \frac{25}{125} \) \[ \frac{25 \div 25}{125 \div 25} = \frac{1}{5} \]
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\( \frac{10}{20} \) \[ \frac{10 \div 10}{20 \div 10} = \frac{1}{2} \]
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\( \frac{5}{25} \) \[ \frac{5 \div 5}{25 \div 5} = \frac{1}{5} \]
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\( \frac{10}{5} \) \[ \frac{10 \div 5}{5 \div 5} = \frac{2}{1} \quad \text{or } 2 \]
From the calculations, the fractions that are equivalent to \( \frac{1}{5} \) are:
- \( \frac{25}{125} \)
- \( \frac{5}{25} \)
Thus, the two equivalent fractions to \( \frac{1}{5} \) are \( \frac{25}{125} \) and \( \frac{5}{25} \).