Answer-Average weight of 8 gold coins is 20 g per coin. Average weight of 12 silver coins is 35 g per coin....

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Average weight  Total weightNumber of coins  The average weight of 8 gold coins  20 g  Total weight of 8 coins  160 g  The average weight of 12 silver coins  35 g  Total weight of 12 silver coins  420 g  The average weight for 20 coins  160  4208  12  The average weight for 20 coins  58020  29 g  The average weight is 29 g per coin for 20 coins.

Average weight of 8 gold coins is 20 g per coin. Average weight of 12 silver coins is 35 g per coin. What is the average weight per coin for 20 coins?

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