a+b+c =4720
0.4 =4/10 =2/5
0.(3) =3/9 =1/3
0.25 =25/100 =1/4
a b c
-----= ----- = ----- = k
2/5 1/3 1/4
a/2/5 =k ; a =2k/5
b/1/3 =k ; b =k/3
c/1/3 =k ; c =k/4
2k/5+k/3+k/4 =4720 numitor 60
24k+20k+15k =283200
59k =283200
k =4800
2k/5 =2*4800/5 =1920
k/3 =4800/3 =1600
k/4 =4800/4 =1200
v ; 1920+1600+1200 =4720