We need to find the number where 1 represents its 0.5%.
We can put them in a math formula:
0.5% * x = 1
Where x represents the missing number.
Now, we need to convert 0.5% into a fraction.
0.5/100 * x = 1
Solve the equation for x:
Multiply both sides by 100:
100(0.5/100 * x ) = 100(1)
Then
0.5 * x = 100
Divide both sides by 0.5
(0.5 * x ) / 0.5 = 100/0.5
x = 100/0.5
x= 200
Hence, 1 is 0.5 of 200.