Answer:
Without the exact count of pens in the pack, it is not possible to identify where Milio made the initial error in calculating the unit price. Typically, to find the unit price, divide the total cost by the quantity, which seems not to have been done correctly here.
Step-by-step explanation:
While analyzing Milio's work in finding the unit price of a package of pens, it is crucial to identify where the error occurred. If the package of pens costs $1.09, the unit price should be calculated using division, by dividing the total cost by the number of pens in the package. Missteps could be related to division errors, place value errors, or incorrectly applying multiplication instead of division.
However, as the question does not provide the number of pens in the package, we cannot determine where Mill's first error lies. The actual calculation for the unit price depends on the number of pens in the package, which should be a straightforward division problem.