Question
The ratio of Harper's cards to Joseph's cards at first was 3 : 7. After Harper gave Joseph 10 cards, the ratio of Harper's cards to Joseph's cards is 1 : 4. What was the number of cards they had altogether?
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The ratio of Harper's cards to Joseph's cards at first was 3 : 7. After Harper gave Joseph 10 cards, the ratio of Harper's cards to Joseph's cards is 1 : 4. What was the number of cards they had altogether?