Question

Reduza os valores em 20%
a)R$ 30,00
b)R$10,50
c)R$17,60
d)R$45,00
e)R$12,99

Answer 1

Resposta:

A)

 30---100%

 x---80%

100x=2.400

x=24

B)

10,50---100%

 X --- 80%

100x=840

x=8,4

C)

17,60---100%

X---80%

100x=1.408

x=14,08

D)

45---100%

X---80%

100x=3.600

x=36

E)

12,99---100%

 x---80%

100x=1.039,20

x= 10,40