`?%of 10.8=32.4`

Options

A. 3
B. 30
C. 300
D. 0.3

Answer

To solve the equation `?% of 10.8 = 32.4`, we can follow these steps:

### Step 1: Convert the percentage to a decimal
Let the question mark be represented by \( x \). Therefore, we can express the equation as:
\[ \frac{x}{100} \times 10.8 = 32.4 \]

### Step 2: Simplify the equation
To eliminate the fraction, we can multiply both sides of the equation by 100:
\[ x \times 10.8 = 32.4 \times 100 \]
This simplifies to:
\[ x \times 10.8 = 3240 \]

### Step 3: Solve for \( x \)
Now, we can isolate \( x \) by dividing both sides by 10.8:
\[ x = \frac{3240}{10.8} \]

### Step 4: Perform the division
Calculating the right side:
\[ x = 300 \]

### Conclusion
Thus, the value of \( ? \) is \( 300 \).