Question

Calcular as porcentagens:
a) 25% de R$890,00=
b) 120% de 780 kg​

Answer 1

a) R$222,50

b) 936kg

a)

Regra de três.

890 ------ 100%

x   ---------- 25%

100x = 890*25

100x =22250

x = 22250/100

x = R$222,50

b)

780 ----- 100%

x ---------- 120%

780*120/100=

936kg