The graph shows the number of erasers 3 pupils collected. Study the graph and answer the following.
- Who collected 28 erasers? Give the answer in number. (Eg 1)
- Which 2 pupils collected a total of 52 erasers? Give the answer in numbers. (Eg 1, 2)
- How many erasers must Mandy give to Opal so that both of them would have the same number of erasers?
(a)
4 erasers → 1 triangle
28 erasers → 28 ÷ 4 = 7 triangles
(2) Della has 7 triangles so she collected 28 erasers.
(b)
Total number of triangles represented by 52 erasers
= 52 ÷ 4
= 13
Number of triangles that Della and Opal had
= 7 + 6
= 13
2 pupils who collected a total of 52 erasers are (2) Della and (3) Opal.
(c)
Difference in the number of triangles that Mandy and Opal had
= 8 - 6
= 2
Number of erasers that Mandy must give to Opal
= 2 ÷ 2 x 4
= 4
Answer(s): (a) 2; (b) 2, 3; (c) 4