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To solve this problem, let's analyze it step-by-step.

### Problem Breakdown:

1. **Given:**
   - \(\frac{4}{5}\) of the weight of a loaf of bread comes from the flour used in its baking.
   - \(\frac{1}{8}\) of the weight of the flour is protein.

2. **Find:**
   - What fraction of the weight of the loaf is protein?

### Solution:

To find the fraction of the weight of the loaf that is protein, we need to multiply the fraction of the loaf that is flour by the fraction of the flour that is protein.

\[
\text{Fraction of loaf that is protein} = \left(\frac{4}{5}\right) \times \left(\frac{1}{8}\right)
\]

Now, let's perform the multiplication:

\[
\text{Fraction of loaf that is protein} = \frac{4}{5} \times \frac{1}{8} = \frac{4 \times 1}{5 \times 8} = \frac{4}{40} = \frac{1}{10}
\]

### Answer:

The fraction of the weight of the loaf that is protein is \(\frac{1}{10}\).

Would you like more details on any part of this solution or have any questions?

### Related Questions:

1. If \(\frac{2}{3}\) of the weight of a different loaf of bread comes from flour, and \(\frac{1}{6}\) of the flour is protein, what fraction of the loaf's weight is protein?
2. How would the fraction change if the protein content in the flour increased to \(\frac{1}{6}\)?
3. What is the percentage of protein in the loaf of bread?
4. If the loaf weighs 500 grams, how much of it is protein?
5. What fraction of the flour's weight is non-protein?

### Tip:

When solving fraction-related problems, multiplying fractions gives a straightforward way to find a part of a part.

4/5 of the weight of a loaf of bread comes from the flour used in its baking. 1/8 of the weight of the flour is protein. What fraction of the weight of the loaf is protein?

Discover how to determine the fraction of a loaf's weight that is protein by multiplying fractions. This problem is ideal for students in Grades 5-7 and covers essential mathematical concepts related to fractions.

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