The graph shows the number of postcards 3 pupils collected. Study the graph and answer the following.
- Who collected 49 postcards? Give the answer in number. (Eg 1)
- Which 2 pupils collected a total of 91 postcards? Give the answer in numbers. (Eg 1, 2)
- How many postcards must Mary give to Aria so that both of them would have the same number of postcards?
(a)
7 postcards → 1 triangle
49 postcards → 49 ÷ 7 = 7 triangles
(2) Ella has 7 triangles so she collected 49 postcards.
(b)
Total number of triangles represented by 91 postcards
= 91 ÷ 7
= 13
Number of triangles that Ella and Aria had
= 7 + 6
= 13
2 pupils who collected a total of 91 postcards are (2) Ella and (3) Aria.
(c)
Difference in the number of triangles that Mary and Aria had
= 8 - 6
= 2
Number of postcards that Mary must give to Aria
= 2 ÷ 2 x 7
= 7
Answer(s): (a) 2; (b) 2, 3; (c) 7