First, we need to total the number of students that took the test:
1 student got between 1-20%
3 students got between 21-40%
5 students got between 41-60%
8 students got between 61-80%
8 students got between 81-100%
Therefore, the sum of the students is 1+3+5+8+8 = 25 students in total
There were 16 students who got a 61% or above, so the fraction of students that got a 61% or higher is 16/25. Convert this to a decimal, and we get 0.64. To convert from decimal to percent, multiply the decimal by 100%, and the final answer is 64% of students got a 61 or better on the exam.
