Mathematics · Data Interpretation

Based on the data from a cookie contest, P, Q, and R ate cookies (either vanilla or butter): - P: Butter = 60, Vanilla = 140, Total = 200 - Q: Butter = 180, Vanilla = 100, Total = 280 - R: Butter = 60, Vanilla = 60, Total = 120 Find the difference between the number of butter cookies and vanilla cookies eaten by R.