Question

3- Se 1kg de carne custo 12,25 reais, quanto
pagares pos 3200g?​

Answer 1

usaremos a regra de 3.

1kg=1000g

1000g ----- R$12,25

3200g ----- R$X

1000x = 3200.12,25

1000x= 39200

x= 39200÷1000

x= 39,20

3200g de carne custa R$39,20