The graph shows the number of seashells 3 students collected. Study the graph and answer the following.
- Who collected 42 seashells? Give the answer in number. (Eg 1)
- Which 2 students collected a total of 78 seashells? Give the answer in numbers. (Eg 1, 2)
- How many seashells must Lily give to Leah so that both of them would have the same number of seashells?
(a)
6 seashells → 1 triangle
42 seashells → 42 ÷ 6 = 7 triangles
(2) Della has 7 triangles so she collected 42 seashells.
(b)
Total number of triangles represented by 78 seashells
= 78 ÷ 6
= 13
Number of triangles that Della and Leah had
= 7 + 6
= 13
2 students who collected a total of 78 seashells are (2) Della and (3) Leah.
(c)
Difference in the number of triangles that Lily and Leah had
= 8 - 6
= 2
Number of seashells that Lily must give to Leah
= 2 ÷ 2 x 6
= 6
Answer(s): (a) 2; (b) 2, 3; (c) 6