What percentage of 3 days is 18 hours?

Answer

To find out what percentage of 3 days is 18 hours, we can follow these steps:

### Step-by-Step Solution:

1. **Convert Days to Hours**:
We know that 1 day = 24 hours. Therefore, to convert 3 days into hours:
\[ 3 \text{ days} = 3 \times 24 \text{ hours} = 72 \text{ hours} \]

2. **Set Up the Percentage Equation**:
We need to find out what percentage \( x \) of 72 hours is equal to 18 hours. This can be expressed mathematically as:
\[ x\% \text{ of } 72 \text{ hours} = 18 \text{ hours} \]
In mathematical terms, this is:
\[ \frac{x}{100} \times 72 = 18 \]

3. **Solve for \( x \)**:
To isolate \( x \), we can rearrange the equation:
\[ x = \frac{18 \times 100}{72} \]

4. **Calculate \( x \)**:
First, simplify \( \frac{18}{72} \):
\[ \frac{18}{72} = \frac{1}{4} \quad \text{(since 18 is a quarter of 72)} \]
Now, substituting this back into the equation:
\[ x = \frac{1}{4} \times 100 = 25 \]

5. **Conclusion**:
Thus, \( x = 25 \). Therefore, 18 hours is 25% of 3 days.

### Final Answer:
**25% of 3 days is 18 hours.**

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