Question

me ajudem por favoooor!​

Answer 1

Resposta:

a)90% de 105 = x

90/100 . 105 = x

9450/100=x

x=94,5reais

b)35% de x =28

35/100 . x =28

35x/100=28

35x=2800

x=2800/35

x=80

c)X% de 250 = 75

X/100 . 250 = 75

250x/100=75

250x=7500

x=7500/250

x=30%

d)1% de 725 = x

1/100 . 725 = x

725/100 = x

x=7,25