`681+?*40=1161`

Options

A. 14
B. 12
C. 24
D. 16

Answer

To solve the equation \( 681 + ? \times 40 = 1161 \), we will follow these steps:

### Step 1: Isolate the term with the question mark
We start by isolating the term that contains the question mark. We can do this by subtracting 681 from both sides of the equation.

\[ ? \times 40 = 1161 - 681 \]

### Step 2: Perform the subtraction
Now, we will calculate \( 1161 - 681 \).

\[ 1161 - 681 = 480 \]

So, we have:

\[ ? \times 40 = 480 \]

### Step 3: Solve for the question mark
Next, we need to find the value of the question mark by dividing both sides of the equation by 40.

\[ ? = \frac{480}{40} \]

### Step 4: Perform the division
Now, we will calculate \( \frac{480}{40} \).

\[ \frac{480}{40} = 12 \]

### Conclusion
Thus, the value of the question mark is:

\[ ? = 12 \]

### Final Answer
The answer is \( 12 \).

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