Question

Calcule A) 2% de 18 reais B)7% de 14 reais

Answer 1

a) 2% de 18 = 0,36

18/100 = x/2

18 . 2 = 100 . x

36 = 100 . x

x = 36 : 100

x = 0,36

b) 7% de 14 = 0,98

14/100 = x/7

14 . 7 = 100 . x

98 = 100 . x

x = 98 : 100

x = 0,98