17. 7% din 13700 = 7/100*13700 = 7* 137=959 kg
18. la chirie trebuie sa pui 20/100*1000= 20*10=200
la transport 7/100*1000=7*10=70
hrana 30/100*1000=30*10=300
energie electrica 5/100*1000=5*10=50
En termică 4/100*1000=40
Imbracaminte 15/100*1000=150
Diverse 19/100*1000=190
