Question
The ratio of Benjamin's buttons to Mia's buttons at first was 3 : 7. After Benjamin gave Mia 110 buttons, the ratio of Benjamin's buttons to Mia's buttons is 1 : 4. What was the number of buttons they had altogether?
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The ratio of Benjamin's buttons to Mia's buttons at first was 3 : 7. After Benjamin gave Mia 110 buttons, the ratio of Benjamin's buttons to Mia's buttons is 1 : 4. What was the number of buttons they had altogether?