What will come in place of the question mark (?) in the following questions ?
`35+15xx1cdot5=?`

Options

A. 75
B. `5cdot25`
C. `57cdot5`
D. `51cdot5`

Answer

To solve the equation \( 35 + 15 \times 1.5 = ? \), we will follow the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

### Step-by-Step Solution:

1. **Identify the operations**: In the expression \( 35 + 15 \times 1.5 \), we have addition and multiplication.

2. **Perform multiplication first**: According to the order of operations, we first calculate \( 15 \times 1.5 \).
\[ 15 \times 1.5 = 22.5 \]

3. **Substitute back into the expression**: Now, we replace \( 15 \times 1.5 \) in the original equation with \( 22.5 \):
\[ 35 + 22.5 \]

4. **Perform the addition**: Now, we add \( 35 \) and \( 22.5 \):
\[ 35 + 22.5 = 57.5 \]

5. **Final answer**: Therefore, the value that comes in place of the question mark is:
\[ ? = 57.5 \]

### Summary:
The answer to the equation \( 35 + 15 \times 1.5 \) is \( 57.5 \).