Question
The ratio of Levi's marbles to Jonathan's marbles at first was 3 : 7. After Levi gave Jonathan 30 marbles, the ratio of Levi's marbles to Jonathan's marbles is 1 : 4. What was the number of marbles they had altogether?
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The ratio of Levi's marbles to Jonathan's marbles at first was 3 : 7. After Levi gave Jonathan 30 marbles, the ratio of Levi's marbles to Jonathan's marbles is 1 : 4. What was the number of marbles they had altogether?