ANSWER:
The percentage of students attended the college is 80%.
SOLUTION:
Given, there are 35 students in class.
On a certain day 28 students were present.
We need to find what percent of students came to school.
We know that,
Attended students percentage =

Here, total strength = 35 and number of students present = 28.
Now, Attended students percentage =


= 4 x 20 = 80
Hence, the percentage of students attended the collage is 80%.