Ann is baking cookies. She bakes three dozen oatmeal raisin cookies, two dozen sugar cookies, and four dozen chocolate chip cookies. Ann gives away two dozen oatmeal raisin cookies, 1.5 dozen sugar cookies, and 2.5 dozen chocolate chip cookies. How many total cookies does she keep? (Give an exact number.)
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Answer:
60 cookies.
Step-by-step explanation:
= 3 dozen oatmeal raisin cookies = 12×3 = 36
= 2 dozen sugar cookies = 12×2 = 24
= 4 dozen chocolate chip cookies =12×4 = 48
= 36+24+48
= 108
= 2 dozen oatmeal raisin cookies = 12×2=24
= 1.5 dozen sugar cookies = 12+6=18
= 2.5 dozen chocolate chip cookies = 12×2+6=30
= 24+18+30
= 72
= Total cookies - given away cookies = cookies she keeps
= 108 - 72 = 36
Thus she keeps 36 cookies
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