Answer: The required cost of each ear of corn is $0.15.
Step-by-step explanation: Given that Ramon bought a dozen of ears of corn for $1.80.
We are to find the cost of ear of corn.
We will be using the UNITARY method to solve the given problem.
We have
the cost of 1 dozen, that is 12 ears of corn = $1.80.
So, the cost of 1 ear of corn is given by

Thus, the required cost of each ear of corn is $0.15.