Question

Manoel pagou 17% de acréscimo a pagar a prazo uma TV que a vista custa 1600 Qual o valor do acréscimo

Answer 1

Regra de 3 :

100% + 17% = 117%

$\mathtt{~~R\ ~~~~~~~~\%} \\ \mathtt{1.600~~~~~100} \\ \mathtt{~~~x~~~~~~~117} \\ \\ \mathtt{100x = 1.600 ~.~117} \\ \mathtt{100x = 187.200}  \\ \mathtt{x = 187.200\div100} \\ \mathtt{x = 1.872} \\ \\ \\ \boxed{\boxed{\mathtt{Resposta: 1.872,00}}}$