Question
Shannon has enough flour to bake either 21b tarts or 15 cookies. If she has finished baking 3b tarts and 10 cookies, how many more tarts can she still bake in terms of b?
2 m

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Shannon has enough flour to bake either 21b tarts or 15 cookies. If she has finished baking 3b tarts and 10 cookies, how many more tarts can she still bake in terms of b?