What should come in place of question mark (?) in the following questions ?
`355xx2.4xx1.7=?+540`

Options

A. 981.5
B. 908.4
C. 991.2
D. 952.4

Answer

To solve the equation \( 355 \times 2.4 \times 1.7 = ? + 540 \), we will follow these steps:

### Step 1: Set up the equation
We can rewrite the equation by letting \( x \) represent the question mark:
\[ 355 \times 2.4 \times 1.7 = x + 540 \]

### Step 2: Calculate the left side
Now, we need to calculate \( 355 \times 2.4 \times 1.7 \).

1. First, multiply \( 355 \) and \( 2.4 \):
\[ 355 \times 2.4 = 852 \]

2. Next, multiply the result by \( 1.7 \):
\[ 852 \times 1.7 = 1448.4 \]

### Step 3: Substitute back into the equation
Now we substitute back into the equation:
\[ 1448.4 = x + 540 \]

### Step 4: Solve for \( x \)
To find \( x \), we need to isolate it:
\[ x = 1448.4 - 540 \]

### Step 5: Perform the subtraction
Now, calculate \( 1448.4 - 540 \):
\[ 1448.4 - 540 = 908.4 \]

### Conclusion
Thus, the value that should come in place of the question mark is:
\[ \boxed{908.4} \]

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