Question
A bag had some brown pens and purple pens in the ratio of 7 : 1. Tiffany removed 28 brown pens and put another 22 purple pens into the bag. There is now 50% as many brown pens as purple pens in the bag. How many brown pens were in the bag at first?
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A bag had some brown pens and purple pens in the ratio of 7 : 1. Tiffany removed 28 brown pens and put another 22 purple pens into the bag. There is now 50% as many brown pens as purple pens in the bag. How many brown pens were in the bag at first?