Answer: She takes 3500 calories each day.
Step-by-step explanation: Given that a teenager consumes 20% of her calories each day in the form of protein and she is getting 700 calories a day for protein.
We are to find the the number of calories that she is consuming each day.
Let x calories be consumed by the teenager each day.
Then, according to the given information, we have

Thus, She takes 3500 calories each day.