How much weight will I lose?

Anonymous
I am 5'4" and 115 pounds and I have a very fast metabolism and I usually eat junk food and sugar daily. How much weight will I loose if I do not eat any refined sugar or junk food for 2 weeks? one month?
Updates
+1 y
I'm a ballet dancer and I'm looking to lose the extra weight because I have a show coming up and I'm practicing for 2+ hours every day in preparation. Will it be possible to get down to 100 pounds by the end of the month? Any advise on how I could do that?
How much weight will I lose?
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