Four students look at all the dishes in a menu. Amy says one out of the 4 dishes is made from potatoes, Rohan says 25% of the dishes are made from potatoes. Sara says one-fourth of the dishes are made from the potatoes. Peter says half of the dishes are made from potatoes. Which student disagrees with the others ?

Options

A. Amy
B. Rohan
C. Sara
D. Peter

Explanation

To solve the problem, we need to analyze the statements made by each student regarding the dishes made from potatoes.

1. **Identify the statements:**
- Amy: "One out of the 4 dishes is made from potatoes."
- Rohan: "25% of the dishes are made from potatoes."
- Sara: "One-fourth of the dishes are made from potatoes."
- Peter: "Half of the dishes are made from potatoes."

2. **Convert the statements into fractions:**
- Amy's statement can be expressed as a fraction:
\[ \text{Amy's fraction} = \frac{1}{4} \]
- Rohan's statement of 25% can also be converted to a fraction:
\[ \text{Rohan's fraction} = \frac{25}{100} = \frac{1}{4} \]
- Sara's statement is already in the form of a fraction:
\[ \text{Sara's fraction} = \frac{1}{4} \]
- Peter's statement can be expressed as:
\[ \text{Peter's fraction} = \frac{1}{2} \]

3. **Compare the fractions:**
- Amy, Rohan, and Sara all agree that the fraction of dishes made from potatoes is \(\frac{1}{4}\).
- Peter's fraction is \(\frac{1}{2}\), which is different from the others.

4. **Conclusion:**
- The student who disagrees with the others is Peter, as he claims that half of the dishes are made from potatoes, while the others claim that one-fourth of the dishes are made from potatoes.

Thus, the answer is:
**Peter is the student who disagrees with the others.**