The table shows the number of pupils who wear glasses in three Primary 2 classes in a school.
- How many pupils in the three classes do not wear glasses?
- The total number of pupils who wear glasses is the same as the total number of pupils in Class 2A. How many pupils in Class 2B wear glasses?
(a)
Total number of pupils not wearing glasses
= 25 + 15 + 17
= 57
(b)
Total number of pupils in Class 2A
= 25 + 6
= 31
Number of pupils wearing glasses in Class 2B
= 31 - (6 + 15)
= 31 - 21
= 10
Answer(s): (a) 57; (b) 10