Question

a:b=3 b:2=c a-b=40 3a-4b+5c=?

Answer 1

a =3b
b=2c
3b-b=40
2b=40
b=20
c=10
a=60
=150tott a fffost ffff usor nush dece nu stiti

Answer 2

a:b=3;    a=3b

b:2=c;     b=2c



a-b=40;

3b-b=40

2b=40

b=20



a=3*20

a=60


c=20:2

c=10

3a-4b+5c=3*60-4*20+5*10=180-80+50=150