The distribution of the grades is:

0 40 0 100 70 100 100 100 100 70 100 100 100 100 0 100 70 0 50 70 100 80 
70 70 100 50 100 40 70 70 45

32 students in class
28 turned in assignment
22 achieved 70% or higher

69% of those enrolled in the course achieved 70% or higher
79% of those who turned in the assignment achieved 70% or higher

Zeros mean that the students did not turn in the assignment.
The instructor did not record which of the students passed the course.