Question

88 reais menos 11% ?

Answer 1

11% x 88 : 100 =
968 : 100 =
9,68       são 11% de 88

88,00 - 9,68 = 78,32

Answer 2

Regra de 3 :  100% - 11%  = 89%

R$        %
88        100
 x          89

100x = 88 . 89
100x =7.832
x = 7.832 / 100
x = 78,32

Resposta : R$78,32