Hey You! Let's break this down step by step:
You have 200 people in a race, and 20 drop out. Meaning, you must subtract:
200 - 20 = 180
Next, 16 take a break, so you must subtract again:
180 - 16 = 164
Finally, 40 people are added back, so, you must add:
164 + 40 = 204
And that's how you will get your answer! ^