Question

alguém poderia me ajudar nessas 2 questões?

Answer 1

Resposta:

1. letra d

Explicação passo-a-passo:

1. 4000--100%

X. -- 2%

100X= 4000x2%

X=8000÷100

X=80x10=800

Answer 2

$> resolucao \\ \\ \geqslant juros \: \: simples \\ \\ c = 4.000.00 \\ i = 2\%a.m \\ j = 800.00 \\ \\ j = \frac{c \times i \times t}{100} \\ \\ 800 = \frac{4000 \times 2 \times t}{100} \\ \\ 800 = 40 \times 2 \times t \\ \\ 800 = 80 \times t \\ \\ t = \frac{800}{80} \\ \\ t = 10 \\ \\ resposta \: \: > \: \: letra \: \: ( \: \: \: d \: \: \: ) \\ \\ \\ = = = = = = = = = = = = = = = = = = \\ \\ \\ t = 5 \: meses \\ m = 8.050.00 \\ c = 7.000.00 \\ j = m - c \\ j = 8.050.00 - 7.000.00 \\ j = 1.050.00 \\ \\ \\ j = \frac{c \times i \times t}{100} \\ \\ 1050 = \frac{7000 \times i \times 5}{100} \\ \\ 1050 = 70 \times i \times 5 \\ \\ 1050 = 350 \times i \\ \\ i = \frac{1050}{350} \\ \\ i = 3 \\ \\ resposta \: \: > \: \: letra \: \: ( \: \: \: \: b \: \: \: \: ) \\ \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant \geqslant$