`?% "of" 590-11.8=236`

Options

A. 48
B. 45
C. 42
D. 41

Explanation

To solve the equation `?% of 590 - 11.8 = 236`, we can follow these steps:

### Step 1: Convert the percentage to a fraction
Let the question mark be represented by \( x \). The expression "x% of 590" can be written as:
\[ \frac{x}{100} \times 590 \]

### Step 2: Set up the equation
We can now rewrite the original equation:
\[ \frac{x}{100} \times 590 - 11.8 = 236 \]

### Step 3: Isolate the term with x
To isolate the term with \( x \), we first add 11.8 to both sides of the equation:
\[ \frac{x}{100} \times 590 = 236 + 11.8 \]

### Step 4: Calculate the right side
Now, we calculate the right side:
\[ 236 + 11.8 = 247.8 \]
So, we have:
\[ \frac{x}{100} \times 590 = 247.8 \]

### Step 5: Eliminate the fraction
Next, we can eliminate the fraction by multiplying both sides by 100:
\[ x \times 590 = 247.8 \times 100 \]

### Step 6: Calculate the right side
Calculating the right side gives:
\[ 247.8 \times 100 = 24780 \]
So now we have:
\[ 590x = 24780 \]

### Step 7: Solve for x
To find \( x \), we divide both sides by 590:
\[ x = \frac{24780}{590} \]

### Step 8: Perform the division
Now, we perform the division:
\[ x = 42 \]

### Conclusion
Thus, the value of the question mark is:
\[ \boxed{42} \]

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