`25 div 0.5 - 0.5= ?`

Options

A. 25
B. 0
C. 36.5
D. 49.5

Explanation

To solve the expression \( 25 \div 0.5 - 0.5 \), we will follow these steps:

### Step 1: Divide 25 by 0.5
To perform the division, we can rewrite the division by a fraction as multiplication by its reciprocal. Thus, we have:
\[ 25 \div 0.5 = 25 \times \frac{1}{0.5} \]
Calculating the reciprocal of 0.5 gives us 2, so:
\[ 25 \div 0.5 = 25 \times 2 = 50 \]

### Step 2: Subtract 0.5 from the result
Now we take the result from Step 1 and subtract 0.5:
\[ 50 - 0.5 = 49.5 \]

### Final Answer
Thus, the final answer is:
\[ \boxed{49.5} \]

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