Question
The ratio of Samantha's pens to Ella's pens at first was 3 : 7. After Samantha gave Ella 48 pens, the ratio of Samantha's pens to Ella's pens is 1 : 3. What was the number of pens they had altogether?
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The ratio of Samantha's pens to Ella's pens at first was 3 : 7. After Samantha gave Ella 48 pens, the ratio of Samantha's pens to Ella's pens is 1 : 3. What was the number of pens they had altogether?