A + 1 square = 8 squares
A + B = 10 squares
B + C = A + 10 squares
- A = _____ squares
- B = _____ squares
- C = _____ squares
A + 1 square = 8 squares --- (1)
A + B = 10 squares --- (2)
B + C = A + 10 squares --- (3)
(a)
From (1)
A + 1 square = 8 squares
A = 8 squares - 1 square
A = 7 squares
(b)
Substitute A = 7 squares into (2).
A + B = 10 squares
7 squares + B = 10 squares
B = 10 squares - 7 squares
B = 3 squares
(c)
Substitute A = 7 squares and B = 3 squares into (3).
B + C = A + 10 squares
3 squares + C = 7 squares + 10 squares
3 squares + C = 17 squares
C = 17 squares - 3 squares
C = 14 squares
Answer(s): (a) 7; (b) 3; (c) 14