The table shows the number of pupils who wear watches in three Primary 3 classes in a school.
- How many pupils in the three classes wear watches?
- The total number of pupils who wear watches is the same as the total number of pupils in Class 3B. How many pupils in Class 3A do not wear watches?
(a)
Total number of pupils wearing watches
= 18 + 23 + 12
= 53
(b)
Total number of pupils in Class 3B
= 4 + 23
= 27
Number of pupils wearing watches in Class 3A
= 27 - (4 + 10)
= 27 - 14
= 13
Answer(s): (a) 53; (b) 13