Question

calcule a porcentagem

A)45% de 8200
B)2% de Cr$ 150,00

Answer 1

100%-----8200
X.
45%------- x
fazendo meios pelos extremos, temos:
100x=369000
x=3690
b) 100%-----150
X
2%-----x
100x=300
x=3,00 r

Answer 2

calcule a porcentagem

A)45% de 8200
B)2% de Cr$ 150,00


A)

$\dfrac{100}{45} =\dfrac{8200}{X} \\ 100X = 45*8200 \\ 100X = 369000 \\ X =\dfrac{ 369000}{100} \\ X = 3690$


Resposta : 3690


B)

$\dfrac{100}{2} =\dfrac{150}{X} \\ 100X = 2*150 \\ 100X = 300 \\ X =\dfrac{300}{100} \\ X = 3$

Resposta : 3 Cr$


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