Question
Barbara has 15 as many buttons as Tiffany. They have a total of 120 buttons. How many buttons must Tiffany give to Barbara so that they will have the same number of buttons?
4 m

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Barbara has 15 as many buttons as Tiffany. They have a total of 120 buttons. How many buttons must Tiffany give to Barbara so that they will have the same number of buttons?