Question
A bag had some silver pens and blue pens in the ratio of 5 : 1. Anna removed 31 silver pens and put another 10 blue pens into the bag. There is now 50% as many silver pens as blue pens in the bag. How many silver pens were in the bag at first?
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A bag had some silver pens and blue pens in the ratio of 5 : 1. Anna removed 31 silver pens and put another 10 blue pens into the bag. There is now 50% as many silver pens as blue pens in the bag. How many silver pens were in the bag at first?