A + 2 star = 10 stars
A + B = 10 stars
B + C = A + 1 stars
- A = _____ stars
- B = _____ stars
- C = _____ stars
A + 2 star = 10 stars --- (1)
A + B = 10 stars --- (2)
B + C = A + 1 stars --- (3)
(a)
From (1)
A + 2 star = 10 stars
A = 10 stars - 2 star
A = 8 stars
(b)
Substitute A = 8 stars into (2).
A + B = 10 stars
8 stars + B = 10 stars
B = 10 stars - 8 stars
B = 2 stars
(c)
Substitute A = 8 stars and B = 2 stars into (3).
B + C = A + 1 stars
2 stars + C = 8 stars + 1 stars
2 stars + C = 9 stars
C = 9 stars - 2 stars
C = 7 stars
Answer(s): (a) 8; (b) 2; (c) 7
