Question
The ratio of Nora's marbles to Julian's marbles at first was 3 : 7. After Nora gave Julian 28 marbles, the ratio of Nora's marbles to Julian's marbles is 1 : 3. What was the number of marbles they had altogether?
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The ratio of Nora's marbles to Julian's marbles at first was 3 : 7. After Nora gave Julian 28 marbles, the ratio of Nora's marbles to Julian's marbles is 1 : 3. What was the number of marbles they had altogether?