Cena brutto :
Chleb:
4.00 + 0.05 * 4.00 = 4.00 + 0.20 = 4.20
Pączek:
0.90 + 0.08 * 0.90 = 0.90 + 0.072 = 0.97
Paczka herbatników:
3.80 + 0.23 * 3.80 = 3.80 + 0.874 =4.67
