
Juros simples
Authored by manuela barros
Mathematics
11th Grade
Used 16+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é o valor dos juros simples produzidos por um capital de R$ 500,00 aplicado à taxa de 2% ao mês durante 6 meses?
A) R$ 60,00
B) R$ 560,00
C) R$ 30,00
D) R$ 530,00
Answer explanation
Detalhamento: J = C.i.t = 500 x 0,02 x 6 = 60
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é o capital inicial de uma aplicação que rendeu R$ 180,00 de juros simples à taxa de 2% ao mês em 3 meses?
A) R$ 2.700,00
B) R$ 3.000,00
C) R$ 3.300,00
D) R$ 3.600,00
Answer explanation
Detalhamento: C = J / (i.t) = 180 / (0,02 x 3) = 3300
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é o valor atual de um título que vence daqui a 8 meses e tem valor nominal de R$ 5.000,00 à taxa de desconto simples de 1,25% ao mês?
A) R$ 4.500,00
B) R$ 4.600,00
C) R$ 4.700,00
D) R$ 4.800,00
Answer explanation
Detalhamento: A = N - D = N - N.i.t = 5000 - 5000 x 0,0125 x 8 = 4600
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é o montante final de uma aplicação de R$ 800,00 à taxa de 3% ao mês durante 4 meses no regime de juros simples?
A) R$ 892,00
B) R$ 96,00
C) R$ 896,00
C) R$ 904,00
Answer explanation
Detalhamento: M = C + J = C + C.i.t = 800 + 800 x 0,03 x 4 = 896
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Num balancete de uma empresa consta que certo capital foi aplicado a uma taxa de 30% ao ano durante 8 meses, rendendo juros simples no valor de R$ 192,00. O capital aplicado foi de:
A) R$ 288,00.
B) R$ 880,00.
C) R$ 960,00.
D) R$ 2.880,00
Answer explanation
Dados:
i = 30% ao ano;
t = 8 meses;
J = 192,00.
Note que o tempo e a taxa estão em unidades de medida diferentes. Vamos transformar a taxa de 30% ao ano para uma taxa mensal. Como o ano possui 12 meses, então 30% : 12 = 2,5%.
i = 2,5% a.m
Agora, substituindo na fórmula, temos que:
J = C · i · t
192 = C · 0,025 · 8
192 = 0,2 C
C = 192 / 0,2
C = 960
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