A + 2 star = 7 stars
A + B = 6 stars
B + C = A + 8 stars
- A = _____ stars
- B = _____ stars
- C = _____ stars
A + 2 star = 7 stars --- (1)
A + B = 6 stars --- (2)
B + C = A + 8 stars --- (3)
(a)
From (1)
A + 2 star = 7 stars
A = 7 stars - 2 star
A = 5 stars
(b)
Substitute A = 5 stars into (2).
A + B = 6 stars
5 stars + B = 6 stars
B = 6 stars - 5 stars
B = 1 stars
(c)
Substitute A = 5 stars and B = 1 stars into (3).
B + C = A + 8 stars
1 stars + C = 5 stars + 8 stars
1 stars + C = 13 stars
C = 13 stars - 1 stars
C = 12 stars
Answer(s): (a) 5; (b) 1; (c) 12