1)78% x=3540000
78x/100=3540000
78x=354000000
x=4538461.53 lei
2)p/100*21=10
21p/100=10
21p=1000
p=47.61 % reprezinta fetele
p/100*21=11
21p/100=11
21p=1100
p=52.38 % reprezinta baietii
3)Cati adulti sunt:
128%a=17920
128a/100=17920
128a=1792000
a=14 000 adulti
Cati copii sunt :
17920-14000=3920 copii