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Step 1:I'll solve this problem by providing a clear, step-by-step explanation about when the US stopped making copper pennies.
Step 2:: Understanding Penny Composition
The United States did not completely stop making copper pennies, but significantly changed their composition in 1982. Before 1982, pennies were made of 95% copper and 5% zinc.
Step 3:: Reason for Composition Change
A copper penny cost approximately $$\frac{1.5}{1}$$ times its actual monetary worth to manufacture.
The rising cost of copper made it more expensive to produce pennies than their face value.
Step 4:: 1982 Transition Year
- Pennies made after mid-1982: $$97.5\%$$ zinc with a thin copper coating
In 1982, the U. S. Mint transitioned penny composition:
Final Answer
This change was primarily motivated by the increasing cost of copper relative to the penny's face value.
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