Answer:
3/4 feet are eroding per year
Step-by-step explanation:
There are 12 months in a year. You know that every 4 months, the shoreline erodes 1/4 feet.
Divide 12/4 to get 3.
That means that the shoreline erodes 1/4 feet 3 times per year.
Multiply 3 by 1/4 to get an answer of 3/4.
Hope this helps :)
