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Three sisters purchased treats at a bake sale. The oldest sister spent $2.70 on brownies. The middle sister spent four times as much on cookies as the older sister spent on brownies. The youngest sister spent $3.68 less on a cake than the middle sister spent on cookies. How much did each sister spend?

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Answer:

the oldest sister spent 2.70$ (given)

the middle sister spent 10.80$

and the youngest sister spent 7.12$

Step-by-step explanation:

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