(a) To find what percent 51 is of 60, you can use the formula:
\[ \text{Percentage} = \left(\frac{\text{Part}}{\text{Whole}}\right) \times 100 \]
Here, the part is 51 and the whole is 60.
\[ \text{Percentage} = \left(\frac{51}{60}\right) \times 100 \approx 85% \]
So, 51 is approximately 85% of 60.
(b) To find 95% of 80, you can use the formula:
\[ \text{Number} = \left(\text{Percentage} \times \text{Whole}\right) / 100 \]
Here, the percentage is 95 and the whole is 80.
\[ \text{Number} = \left(95 \times 80\right) / 100 = 76 \]
So, 95% of 80 is 76.