Answer:
3/5 or 60%
Step-by-step explanation:
We know the probability of a student passing is 2/5 so we can use that information to find the answer. Since 2/5 is the probability of a student passing an exam, that leaves us with 3/5 because 5/5 - 2/5 = 3/5. If you want to find the percentage you can divide 3 and 5 or we can multiply the numerator and denominator by 2. We would get 6/10 and we know 6/10 is equal to 60/100 so the percentage is 60% out of 100.
Therefore, 3/5 or 60% is the probability of a student failing an exam.
