Question
The ratio of Nathan's buttons to Ellie's buttons at first was 2 : 5. After Nathan gave Ellie 120 buttons, the ratio of Nathan's buttons to Ellie's buttons is 1 : 4. What was the number of buttons they had in total?
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The ratio of Nathan's buttons to Ellie's buttons at first was 2 : 5. After Nathan gave Ellie 120 buttons, the ratio of Nathan's buttons to Ellie's buttons is 1 : 4. What was the number of buttons they had in total?