Question
A bag had some brown pens and white pens in the ratio of 3 : 2. Sarah removed 30 brown pens and put another 20 white pens into the bag. There is now 25% as many brown pens as white 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 white pens in the ratio of 3 : 2. Sarah removed 30 brown pens and put another 20 white pens into the bag. There is now 25% as many brown pens as white pens in the bag. How many brown pens were in the bag at first?