The table shows the number of Primary 4 students in Albert School who participated in a Social Studies class.
- How many Primary 4 students did not participate in the training?
- What is the enrolment of Primary 4 students in Albert School?
(a)
Number of students who did not participate in each class:
Class 4A → 31 - 20 = 11
Class 4B → 30 - 21 = 9
Class 4C → 34 - 30 = 4
Class 4D → 36 - 32 = 4
Class 4E → 32 - 23 = 9
Total number of students who did not participate
= 11 + 9 + 4 + 4 + 9
= 37
(b)
Total enrolment
= 31 + 30 + 34 + 36 + 32
= 163
Answer(s): (a) 37; (b) 163