represent the above sentences in first order predicate logic

“The department of electronics and computer engineering offers two undergraduate courses, computer engineering and electronics and communication engineering. Almost 75% of those courses are similar. If the students of any of those engineering programs study another one year more can be eligible to get both degrees. Only some of them may be interested to get bachelor in computer, electronics, and communication engineering.”

My confusions here-:
1) How to represent 75% of courses?
2) How to represent student study one more year?