To find out what number 20 is a part of to make 40, we can set up a simple equation. We want to figure out what number (let’s call it ‘x’) satisfies the condition that 20% of ‘x’ equals 40.
We express this in an equation as follows:
0.20 * x = 40
Now, we solve for ‘x’. To isolate ‘x’, we divide both sides of the equation by 0.20:
x = 40 / 0.20
Calculating the right side gives us:
x = 200
So, 20% of 200 is indeed 40. This means that the number we are looking for is 200.