Question

Urgente pfv,obrigada

Answer 1

a-  
1kg-----13.00 reais
2.5kg--- x reais
x=13*2.5
X=32.50 reais
b-
1kg-----7.98 reais
0.3kg---- x reais 
x= 0.3*7.98 => x=2.39 reais.
c-
1kg----1.80 reais
1.20kg----x reais
x=1.80*1.20 => x=2.16 reais.
d-
1kg-----8.49 reais
3.5kg---- x rais
x=3.5*8.49 => x=29.71 reais