Warren used 72 sticks to make a total of 23 squares and triangles. An square is made by 4 sticks and a triangle is made by 3 sticks. How many of each type of shapes did he make?
- Number of squares
- Number of triangles
(a)
Assuming all are triangles,
Number of sticks needed for the triangles
= 3 x 23
= 69
Number of extra sticks left
= 72 - 69
= 3
Difference in the number of sticks between 1 square and 1 triangle
= 4 - 3
= 1
Number of squares
= 3 ÷ 1
= 3
(b)
Number of triangles
= 23 - 3
= 20
Answer(s): (a) 3; (b) 20