Question

me ajude ai
calcule:
a) 15% de 92=
b) 70% de 154=
c) 12% de 80=
d) 5% de 700=
e) 9% de 500=

Answer 1

$a)15\% \: de \: 92 \: = \: 13.8$

$b)70\% \: de \: 154 \: = \: 107.8$

$c)12\% \: de \: 80 \: = \: 9.6$

$d)5\% \: de \: 700 \: = \: 35$

$e)9\% \: de \: 500 \: = \: 45$

Answer 2

Resposta:

a)

% --------------------- n

100 -------------------92

15------------------- --x

100x = 92.15

100x = 1380

x= 1380/100

x = 13,8

b)

% --------------- n

100 ------------154

70 ------------- x

100x = 70.154

100x = 10780

x =107,8

c)

100% ---------80

12% -----------x

100x = 80.12

100x = 960

x = 9,6

d) 100% ----------- 700

5% ------------------x

100x = 700.5

100x = 1200

x = 12

e)

100% ------- 500

9% ----------- x

100x = 500.9

100x = 4500

x = 45