Sugar cookies: 48*1/4 = 12
Oatmeal : 48* 3/8 = 18
cinnamon: 10
cookies = sugar+oatmeal+cinnamon+chocolatechip
48 = 12+18+10+chocolatechip
48 =40+chocolatechip
subtract 40 from each side
chocolatechip = 8
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