Question

Calcule:
A)30% de 1500.
B)12% de 120.
C)27% de 900.
D)55% de 300.
E)98% de 450.

FAZEM CALCULOS
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Answer 1

Resposta:

a)1500=100%

x=30%

x•100=1500•30

x•100=45000

x=45000/100

x=450

b)120=100%

x=13%

x•100=120•13

x•100=15600

x=15600/100

x=156

c)900=100%

x=27%

x•100=900•27

x•100=24300

x=24300/100

x=243

e) 450=100%

x=98%

x•100=450•98

x•100=44100

x=44100/100

x=441

(todas utilizando a regra de 3)