Answer:
First number (x) = 12
Second number (y) = 80
Third number (z) = 20
Step-by-step explanation:
Let assume x,y,z to represent first, second and third respectively.
X + y + z = 112
Y = 4z
X = z - 8
So therefore
(Z-8) + (4z) + z = 112
Z + 4z + z = 112 + 8
6z = 120
Z = 120/6
Z = 20.
So,
First x = z - 8
20 - 8 = 12
Second y = 4z
4 x 20 = 80
Third z = 20