To determine the fraction of the blanket that is blue, we first need to add the fractions of the blanket that are green and beige, and then subtract that sum from 1 (the whole blanket).
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Fractions of the blanket:
- Green = \( \frac{3}{8} \)
- Beige = \( \frac{1}{4} \)
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Convert \( \frac{1}{4} \) into eighths: \[ \frac{1}{4} = \frac{2}{8} \]
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Add the green and beige fractions: \[ \text{Total} = \frac{3}{8} + \frac{2}{8} = \frac{5}{8} \]
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Determine the fraction that represents the blue part: \[ \text{Blue} = 1 - \text{Total} = 1 - \frac{5}{8} \]
To subtract \( \frac{5}{8} \) from 1, we can rewrite 1 as \( \frac{8}{8} \): \[ \text{Blue} = \frac{8}{8} - \frac{5}{8} = \frac{3}{8} \]
Therefore, the fraction that represents the blue part of the blanket is \( \frac{3}{8} \).