If '+' means `xx,'-'` means `div,'xx'` means + and `'div'` means `-`, compute the value of the expression :
`17+6xx13div8`
A. 100
B. 107
C. 110
D. 109

Options

A. C
B. A
C. D
D. B

Answer

To solve the expression `17 + 6 xx 13 div 8`, we need to first interpret the operations based on the given meanings:

- `+` means `xx` (multiplication)
- `-` means `div` (division)
- `xx` means `+` (addition)
- `div` means `-` (subtraction)

Now, let's rewrite the expression using these meanings:

1. Replace `+` with `xx`:
- `17 + 6 xx 13 div 8` becomes `17 xx 6 xx 13 div 8`

2. Replace `xx` with `+`:
- `17 xx 6` becomes `17 + 6`
- `6 xx 13` becomes `6 + 13`
- `17 + 6 + 13 div 8`

3. Replace `div` with `-`:
- `13 div 8` becomes `13 - 8`

Now, we can rewrite the expression as:
- `17 + 6 + (13 - 8)`

Now, let's compute the expression step by step:

### Step 1: Calculate `13 - 8`
- \( 13 - 8 = 5 \)

### Step 2: Substitute back into the expression
- The expression now becomes:
\( 17 + 6 + 5 \)

### Step 3: Calculate `17 + 6`
- \( 17 + 6 = 23 \)

### Step 4: Add the result from Step 1
- \( 23 + 5 = 28 \)

### Final Calculation
- The final value of the expression is \( 28 \).

### Conclusion
The value of the expression `17 + 6 xx 13 div 8` is **28**.