Question

A quantia de R$1143,00 representa qual porcentagem de R$2540,00?

Answer 1

2540 - 100%
1143 -    x

x.2540=100.1143
x=114300/2540 
x= 45

1143 = 45% de 2540

Answer 2

  R$         %
2540     100
1143        x

2540.x = 1143.100

x = 1143 . 100      (:20)
      -----------------
          2540           (:20)

x = 1143 . 5
      -------------
         127

x = 9.5

x = 45%

Resp.: R$ 1143,00 corresponde a 45% de R$ 2540,00.