Question

Calcule as porcentagens usando regra de três
A) 60% de 35
B)40% de 160
C)5% de 60

Answer 1

60% de 35= 60/100= 0,6 x 35= 21
40% de 160= 40/100= 0,4 x 160= 64
5% de 60= 5/100= 0,05 x 60= 3

Answer 2

Olá,

Vamos lá,

a) 100%..............35
       60%..............x

100x = 35 * 60
100x = 2.100
x = 2.100/100
x = 21

b) 100%............160
       40%,,,,,,,,,,,,x

100x = 160 * 40
100x = 6.400
x = 6400/100
x = 64

c) 100%..........60
         5%..........x

100x = 60 * 5
100x = 300
x = 300/100
x = 3