The bar graph shows the number of books Primary 4 pupils read over a week.
- Class 4 _____ and 4 _____ read 270 books in total. Give your answers in letters. (Eg A, B)
- For every 2 books read by the pupils, they can exchange for 1 gift. How many more gifts did Class 4B exchange than Class 4C?
(a)
Number of books that pupils in Class 4A read = 220
Number of books that pupils in Class 4C read = 50
Number of books that pupils in Class 4A and 4C read
= 220 + 50
= 270
(b)
Number of books that pupils in Class 4B read more than pupils read in Class 4C
= 280 - 50
= 230
Number of gifts that pupils in Class 4B exchanged more than pupils in Class 4C
= 230 ÷ 2
= 115
Answer(s): (a) A, C; (b) 115