42%no 84

To find 42% of 84, you can use the formula for calculating a percentage:

\[ \text{Percentage} = \left(\frac{\text{Percentage Rate}}{100}\right) \times \text{Total} \]

Here, the percentage rate is 42, and the total is 84. So we calculate:

\[ 42\% \text{ of } 84 = \left(\frac{42}{100}\right) \times 84 \]

Calculating that:

\[ = 0.42 \times 84 = 35.28 \]

Therefore, 42% of 84 is 35.28.