The value of `8.53+6.6xx0.8-1.17div0.09` is :

Options

A. `12.51`
B. `0.81`
C. `5.91`
D. `7.758`

Answer

To solve the expression \( 8.53 + 6.6 \times 0.8 - \frac{1.17}{0.09} \), 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 expression**:
\[ 8.53 + 6.6 \times 0.8 - \frac{1.17}{0.09} \]

2. **Perform the division**:
\[ \frac{1.17}{0.09} = 13 \]
So, we rewrite the expression:
\[ 8.53 + 6.6 \times 0.8 - 13 \]

3. **Perform the multiplication**:
\[ 6.6 \times 0.8 = 5.28 \]
Now the expression becomes:
\[ 8.53 + 5.28 - 13 \]

4. **Perform the addition**:
\[ 8.53 + 5.28 = 13.81 \]
Now the expression is:
\[ 13.81 - 13 \]

5. **Perform the subtraction**:
\[ 13.81 - 13 = 0.81 \]

### Final Answer:
The value of the expression is \( 0.81 \).