Question

QUESTÃO 03
Qual deve ser o capital aplicado a uma taxa de juros
simples de 25% a.a. para que em 6 meses renda R$
425,00 de juros?
a) R$ 3.400,00
b) R$ 4.300,00
c) R$ 2.800,00
d) R$ 5.000,00
e) R$ 4.250,00​

Answer 1

Resposta:

e) R$ 4.250,00

Explicação passo-a-passo:

espero ter ajudado

Answer 2

$\sf\large \boxed{\boxed{\tt J = C \cdot i \cdot t}}$

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$\sf \displaystyle 425\:=\:C\:\cdot 0,\:25\:\cdot \left(\frac{1}{2}\right)\\\\\\\sf \boxed{\star \sf \ {Troque \:os \:lados} }\\\\\\\sf C\cdot \:0.25\left(\frac{1}{2}\right)=425\\\\\\\sf C\frac{0.25}{2}=425\\\\\\\sf 2C\frac{0.25}{2}=425\cdot \:2\\\\\\\sf 0.25C=850\\\\\\\sf \frac{0.25C}{0.25}=\frac{850}{0.25}\\\\\\\\\large \to \boxeed{\boxed{\sf C=3400}}$