Question
The ratio of John's coins to Isaac's coins at first was 3 : 7. After John gave Isaac 45 coins, the ratio of John's coins to Isaac's coins is 1 : 4. What was the number of coins they had in all?
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The ratio of John's coins to Isaac's coins at first was 3 : 7. After John gave Isaac 45 coins, the ratio of John's coins to Isaac's coins is 1 : 4. What was the number of coins they had in all?