Question

Ajuda ai gente é pra manhã!!!!

Answer 1

Alcides>>>> 618 de 1200
1200 ................100
618....................x
x = ( 618 * 100 )/1200  
x = 61800/1200  = 618/12 = 51,5% ***

Eleonor
1200 ......................100
1025 ....................... x
x = ( 1025 * 100)/ 1200
x = 102500/1200= 1025/12 =85,4% ****

Cassia
1200 ....................100
820 ......................  x
x = ( 820 * 100 )/1200
x = 82000/1200 = 820/12 = 68,333 ...% ***

b
NULOS >>>> 21 
1200 ....................100
21 ........................ X
X = ( 21 * 100 )/1200
X= 2100/1200 
X = 21/12 =1,75%

BRANCOS >>>>> 16

1200 ......................100
16 ........................... X

X = ( 16 * 100 )/ 1200
X = 1600/1200
X = 16/12 = 1,333 %