Question
The ratio of Rebecca's coins to Isaac's coins at first was 3 : 5. After Rebecca gave Isaac 100 coins, the ratio of Rebecca's coins to Isaac's coins is 1 : 3. What was the number of coins they had in all?
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The ratio of Rebecca's coins to Isaac's coins at first was 3 : 5. After Rebecca gave Isaac 100 coins, the ratio of Rebecca's coins to Isaac's coins is 1 : 3. What was the number of coins they had in all?