Question
Pamela had 20-cent and 10-cent coins in the ratio of 3 : 4. The total value of the coins was $16. How many 20-cent coins did Pamela have?
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Pamela had 20-cent and 10-cent coins in the ratio of 3 : 4. The total value of the coins was $16. How many 20-cent coins did Pamela have?