Answer :

To solve the question "What is [tex]\( 66\% \)[/tex] of 75?", you can follow these steps:

1. Understand the Problem:
- We need to find [tex]\( 66\% \)[/tex] of the number 75.

2. Convert the Percentage to a Decimal:
- Percent means per hundred. So, [tex]\( 66\% \)[/tex] can be written as [tex]\( 66 \div 100 \)[/tex] or [tex]\( 0.66 \)[/tex].

3. Multiply the Decimal by the Number:
- Multiply 0.66 by 75 to find [tex]\( 66\% \)[/tex] of 75.
- Calculation: [tex]\( 0.66 \times 75 \)[/tex].

4. Perform the Multiplication:
- [tex]\( 0.66 \times 75 = 49.5 \)[/tex].

5. Write the Final Answer:
- Therefore, [tex]\( 66\% \)[/tex] of 75 is 49.5.

So, the correct answer is:
[tex]\[ \boxed{49.5} \][/tex]

In this case, the answer matches option D.