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Adam has 15 of a certain type of rare coin and is interested in knowing how much this collection is worth. He discovers that 5 of these coins are worth 12 dollars in total. Assuming that the value of each coin is the same, how many dollars is his entire collection worth?

 Apr 14, 2020
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12 d / 5c = 2.4   dollars/coin

2.4 dollars/coin   x    15 coins   = $........

 Apr 14, 2020

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