Question
Zoe had 50-cent and 10-cent coins in the ratio of 4 : 5. The total value of the coins was $15. How many 10-cent coins did Zoe have?
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Zoe had 50-cent and 10-cent coins in the ratio of 4 : 5. The total value of the coins was $15. How many 10-cent coins did Zoe have?