Answer:
1/5 probability of selecting a student that will fail
Step-by-step explanation:
Given,
120-total students
100-pass
Find the amount that will fail,
total students - pass
-substitute in given values
120-100=20
20 students will fail
Proportion to find the probability,
(part/whole)
-substitute for situation
(fail/total students)
-substitute values
20/100
-simplify (÷20)
1/5
