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Mathematics, 09.11.2019 08:31 randee56

We have a jar of coins, all pennies and dimes. all together, we have 309 coins, and the total value of all coins in the jar is $ 19.2. how many pennies are there in the jar?

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We have a jar of coins, all pennies and dimes. all together, we have 309 coins, and the total value...
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