To find 20 percent of 42, you can use the following method:
1. Convert the percentage to a decimal by dividing it by 100. So, 20 percent becomes 0.20.
2. Multiply the decimal by the number you want to find the percentage of. In this case, multiply 0.20 by 42.
Calculation: 0.20 × 42 = 8.4
Therefore, 20 percent of 42 is 8.4.