Which coin weighs 3.1 g?

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Multiple Choice

Which coin weighs 3.1 g?

Explanation:
Pennies were historically about 3.1 grams because they were made mostly of copper. In 1982 the composition changed to a zinc core with a thin copper coating, which reduced the weight to about 2.5 grams. So if the question refers to the traditional penny weight, 3.1 g matches the penny. Dimes are lighter, nickels are heavier, and a dollar bill isn’t a coin. Therefore, the penny is the best answer for the 3.1 g weight.

Pennies were historically about 3.1 grams because they were made mostly of copper. In 1982 the composition changed to a zinc core with a thin copper coating, which reduced the weight to about 2.5 grams. So if the question refers to the traditional penny weight, 3.1 g matches the penny. Dimes are lighter, nickels are heavier, and a dollar bill isn’t a coin. Therefore, the penny is the best answer for the 3.1 g weight.

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