To find out what percentage 0.5 is of 20, you can use the following formula:
Percentage = (Part / Whole) × 100
In this case, the Part is 0.5 and the Whole is 20. Plugging these values into the formula:
Percentage = (0.5 / 20) × 100
First, divide 0.5 by 20:
0.5 ÷ 20 = 0.025
Next, multiply the result by 100 to get the percentage:
0.025 × 100 = 2.5%
So, 0.5 is 2.5% of 20.