Question #b36cf
1 Answer
Jun 29, 2016
Suzan 15
Juan 46
Ali 23
Explanation:
Call x --> Suzan's messages
Call y --> Juan's messages
Call z --> Ali's messages
We have these 3 equations:
(1) x + y + z = 84
(2) y = 2z
(3) x = z - 8
Replace (2) and (3) in (1).
(z - 8) + 2z + z = 84
4z = 84 + 8 = 92
z = 23
y = 46
x = 23 - 8 = 15
