no 8 dan 9 tlng jawab ya

8. Budi=x
Doni=y

x/y = 1/3
3x=y

y-x=120.000
3x-x= 120000
x=60000
y=180000

9.
2.240.000= x + 9/12.16/100 x
2240000= x + 0.12x
2240000= 1,12x
x = 2000000