Question

a+b+c=430 a:b=2 b:c=3 calculati nr

Answer 1

a+b+c=430
a:b=2 ⇒ a=2b
                            ⇒ a=2x3c ⇒a=6c
b:c=3 ⇒ b=3c
înlocuim
6c+3c+c=430
10c=430
c=430:10
c=43
b=3x43
b=129
a=6x43
a=258
V :    258+129+43=430      A

Answer 2

a:b=2=>a=2b=2*3c=6c
b:c=3=>b=3c
6c+3c+c=430
10c=430 I:10
c=43
=>a=6*43=258
    b=3*43=129