To determine who sold more of their collection, we need to compare the fractions \( \frac{5}{8} \) and \( \frac{4}{10} \).
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Compare \( \frac{5}{8} \) to \( \frac{1}{2} \):
- To find a common denominator, convert \( \frac{1}{2} \) into eighths: \[ \frac{1}{2} = \frac{4}{8} \]
- Since \( \frac{5}{8} > \frac{4}{8} \), we conclude that \( \frac{5}{8} > \frac{1}{2} \).
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Compare \( \frac{4}{10} \) to \( \frac{1}{2} \):
- To find a common denominator, convert \( \frac{1}{2} \) into tenths: \[ \frac{1}{2} = \frac{5}{10} \]
- Since \( \frac{4}{10} < \frac{5}{10} \), we conclude that \( \frac{4}{10} < \frac{1}{2} \).
Now we can summarize:
- \( \frac{5}{8} \) is more than \( \frac{1}{2} \).
- \( \frac{4}{10} \) is less than \( \frac{1}{2} \).
Therefore, since \( \frac{5}{8} > \frac{4}{10} \):
Charlie sold more of his collection.