Question
Mrs Tang had some 50-cent and $1 coins in her wallet. She had 9 more 50-cent coins than $1 coins. The total value of the coins was $18. What was the total number of coins that Mrs Tang had in her wallet?
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Mrs Tang had some 50-cent and $1 coins in her wallet. She had 9 more 50-cent coins than $1 coins. The total value of the coins was $18. What was the total number of coins that Mrs Tang had in her wallet?