Question

(furest-SP)Uma certa mercadoria,que custava r$12,50

Answer 1

12,50.x = 100 . 1,00
12,50 x= 100
x = 100 dividido por 12,50
x = 8
letra b

Answer 2

1/12.5 = x/100

12,5x = 100

x = 100/12,5 = 8 %