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EXPLANATION
We need to determine the worth of a penny. If we have that one cent is equivalent to $0.01 dollars.
When the price of copper is at $1.54 per pound, a penny contains one cent worth of copper.
We can demonstrate this in the following way:
As $1.54 is one pound ---------------------> 1 pound
1 penny -------------------------------------> 0.0067075 pounds of copper
We can apply the unitary method in order to get the worth of 0.0067075 pounds of copper:
[tex]\text{?dollars }=\text{ 0.0067075 pounds copper }\cdot\frac{1.54\text{ dollars}}{1\text{ pound copper}}=0.01\text{ dollars}[/tex]In conclusion, we have shown that 1.54 dollars is equivalent to 1 cent.