S=SUMA DE BANI PRIMITA DE MIHAI
PRIMA CHELTUITA 2 SUPRA 5
REST S-2S SUPRA 5 =5S SUPRA 5-2S SUPRA 5 =3S SUPRA 5
A DOUA CHELTUIALA 25%=25 SUPRA 100=1 SUPRA 4
1SUPRA 4 ×3S SUPRA 5 =3S SUPRA 20
REST 3S/5-3S/20=12S/20-3S/20=9S/20
9S/20=54 LEI
S=20×54/9=120 LEI
/= SUPRA
ASTEPT COROANA