A + 4 circle = 9 circles
A + B = 9 circles
B + C = A + 6 circles
- A = _____ circles
- B = _____ circles
- C = _____ circles
A + 4 circle = 9 circles --- (1)
A + B = 9 circles --- (2)
B + C = A + 6 circles --- (3)
(a)
From (1)
A + 4 circle = 9 circles
A = 9 circles - 4 circle
A = 5 circles
(b)
Substitute A = 5 circles into (2).
A + B = 9 circles
5 circles + B = 9 circles
B = 9 circles - 5 circles
B = 4 circles
(c)
Substitute A = 5 circles and B = 4 circles into (3).
B + C = A + 6 circles
4 circles + C = 5 circles + 6 circles
4 circles + C = 11 circles
C = 11 circles - 4 circles
C = 7 circles
Answer(s): (a) 5; (b) 4; (c) 7