(49×2-8)÷2
=90÷2
=45 (person)
The number of users in the fifth category is:
49- 13=36 (person)
The number of users in Level 4 is:
(45+36)-39=42 (person)
A: The number of subscribers in each class is: Class One, Class Two, Class Three, Class Four and Class Five.
(2) Number of users of each category, disconnection statistics are as follows: