Express each of the following as a ratio :
`0.36%`

Answer

To express `0.36%` as a ratio, follow these steps:

### Step 1: Convert the percentage to a fraction
0.36% can be written as:
\[ \frac{0.36}{100} \]

### Step 2: Remove the decimal
To eliminate the decimal in the numerator, multiply both the numerator and the denominator by 100:
\[ \frac{0.36 \times 100}{100 \times 100} = \frac{36}{10000} \]

### Step 3: Simplify the fraction
Now, simplify the fraction \(\frac{36}{10000}\). We can divide both the numerator and the denominator by their greatest common divisor (GCD), which is 4:
\[ \frac{36 \div 4}{10000 \div 4} = \frac{9}{2500} \]

### Step 4: Express as a ratio
Now, we can express \(\frac{9}{2500}\) as a ratio:
\[ 9 : 2500 \]

### Final Answer
Thus, \(0.36%\) expressed as a ratio is:
\[ 9 : 2500 \]

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