a,b,c sumele copiilor
a+b+c=1450
a-2a/3=b-3b/4=c-5c/8
a/3=b/4=3c/8
a=3b/4
c=8b/12=2b/3
3b/4+b+2b/3=1450
9b+12b+8b=17400
29b=17400
b=600 lei a cheltuit 600x3/4=450 lei
a=3b/4=3x600/4=450 lei a cheltuit 450 x2/3=300 lei
c=2b/3=2x600/3=400 lei a cheltuit 400 x5/8=250 lei