Question

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Answer 1

Resposta:

Explicação passo a passo:

_________

A) (ok)

X 46% 69,50

X + 46%.x = 69,50

X + 0,46x = 69,50

1,46.x = 69,50

146x = 6950

X = 6950/146

X = 47,60

R.: R$ 47,60

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B) (ok)

12,41 (x) 14,95

Tributos:

X = 14,95 - 12,41

X = 2,54

12,41 = 100

2,54 = x

1241/254= 100/x

4,8858 = 100/x

X = 100/4,8858

X = 20,47

R.: 20,47%

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C) ok

24,64 72% x

24,64 + 24,64.72% = x

24,64 + 24,64.72/100 = x

24,64 + 17,74 = x

x = 42,38

R.: R$ 42,68

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D) (ok)

X 28% 350

X.28/100 + x = 350

0,28x + x = 350

1,28x = 350

X = 350/1,28

X = 35000/128

X = 273,44

R.: R$ 273,44.

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E) ok

3,04 40% x

3,04 . 40%

= 3,04 . 40%

= 3,04 . 40/100

= 3,04 . 4/10

= 12,16/10

= 1,216

= 3,04 + 1,22

= 4,26

R.: R$ 4,26

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F) (ok)

37,20 (x) 120

Tributos:

X = 120,00 - 37,20

X = 82,80

82,80 em %:

37,20 = 100%

82,80 = x %

37,2 / 82,8 = 100/x

372/828 (:2)/(:2) = 100/x

186/414 (:2)/(:2) = 100/x

93/207= 100/x

93x= 20700

X = 20700/93

X = 222,58%

R.: 222,58%

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