Question
Shiyun had 50-cent and 10-cent coins in the ratio of 4 : 5. The total value of the coins was $20. How many 50-cent coins did Shiyun have?
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Shiyun had 50-cent and 10-cent coins in the ratio of 4 : 5. The total value of the coins was $20. How many 50-cent coins did Shiyun have?