Question

a+b+c=57
a:b=3rest1
b:c=3rest 1
a b c ?

Answer 1

a+b+c=57
⇒a=3b+1;
⇒b=3c+1⇒a=3[3c+1]+1⇒a=9c+3+1;
⇒9c+3+1+3c+1+c=57
⇒13c+5=57
⇒13c=52
⇒c=4;
⇒a=9·4+4
⇒a=36+4⇒a=40;
⇒b=3·4+1
⇒b=12+1⇒b=13;