Question
Penelope baked 140 tarts. 25% of them were butter tarts. How many more butter tarts must Penelope bake so that 85% of her tarts are butter tarts?
5 m

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Penelope baked 140 tarts. 25% of them were butter tarts. How many more butter tarts must Penelope bake so that 85% of her tarts are butter tarts?