I think it is 25% but you need to work out ;)
Adding all the marks and dividing them by the total no. of students to get the average marks.
Avg. marks = (7+8+7+9+6)/5
Avg. marks = 37/5
Avg. marks = 7.4
Answer: Yes, and by the looks of it they do look congruent
Hope this helps :)
Answer:
If your goal is to simplify it, then it would be
38Fmnsxi
