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Cookie Dough Fundraiser Sales Solution

Solve the cookie dough sales puzzle for Jill's band fundraiser. Find out how many tubs of chocolate chip and oatmeal dough she sold based on the total collected amount.

jonathon-erik
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Cookie Dough Fundraiser Sales Solution

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  1. WARM UP (after 3.2 Word Prob Notes) Jill is selling cookie dough for her band fundraiser. She knows that she sold 55 tubs of chocolate chip & oatmeal dough combined, but she doesn’t know how many of each she sold. The chocolate chip cookie dough costs $12.25 per tub, and the oatmeal cookie dough costs $9.75 per tub. How many of each type of cookie dough did Jill sell if she collected $621.25?

  2. c = # tubs of choc. chip cookie dough • m = # tubs of oatmeal cookie dough WARM UP (after 3.2 Word Prob Notes) • m = 55 – c • 12.25c + 9.75(55 – c) = 621.25

  3. WARM UP (after 3.2 Word Prob Notes) • 12.25c + 536.25 – 9.75c = 621.25 • 2.5c + 536.25 = 621.25 • 2.5c = 85 • c = 34 c = # tubs of choc. chip cookie dough m = # tubs of oatmeal cookie dough

  4. WARM UP (after 3.2 Word Prob Notes) • m = 21 c = # tubs of choc. chip cookie dough m = # tubs of oatmeal cookie dough • 34 tubs of choc. chip cookie dough • 21 tubs of oatmeal cookie dough

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