Final answer:
The cost per ear of corn is $0.30.
Step-by-step explanation:
To find the cost per ear of corn, you need to divide the total cost by the number of ears. In this case, the total cost is $1.80 and there are 6 ears of corn. So, you divide $1.80 by 6 to get the cost per ear.
$1.80 ÷ 6 = $0.30
Therefore, the cost per ear of corn is $0.30.