Question

calcule as porcentagens abaixo:

a ) 30% de 200=

b ) 60% de 400=

c ) 10% de 250=

d ) 90% de 120=

Answer 1

a ) 30% de 200= 30*200/100=60

b ) 60% de 400= 60*400/100=240

c ) 10% de 250= 10*250/100=25

d ) 90% de 120= 90*120/100=108

Answer 2

Olá.
a) 30% de 200
100%------200
30%--------x

100.x = 30.200
100x=6000
x=6000/100
x=60%
b) 60% de 400
100%-----400
60%--------x
100.x=60.400
100x=24000
x=24000/100
x=240%
c) 10% de 250
100%-----250
10%--------x
100.x=10.250
100x=2500
x=2500/100
x=25%
d)90% de 120
100%------120
90%--------x
100.x=90.120
100x=10800
x=10800/100
x=108%
Espero ter ajudado.