Question
The ratio of Harris's marbles to Bryan's marbles at first was 3 : 7. After Harris gave Bryan 104 marbles, the ratio of Harris's marbles to Bryan's marbles is 1 : 3. What was the number of marbles they had in all?
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The ratio of Harris's marbles to Bryan's marbles at first was 3 : 7. After Harris gave Bryan 104 marbles, the ratio of Harris's marbles to Bryan's marbles is 1 : 3. What was the number of marbles they had in all?