Bună!
n=numărul necunoscut
a) 16%n=20 ⇔ [tex]\frac{16}{100}*n=20 <=> \frac{4}{25} *n=20/*25 <=> n=20*25:4=> n=125[/tex]
b) 16%n=50 ⇔
[tex]\frac{4}{25} *n=50/*25 <=> n=25*50:4 => n=\frac{625}{2}[/tex]
c) 16%n=458
[tex]\frac{4}{25}*n=458/*25 <=> n=458*25:4 => n=\frac{5725}{2}[/tex]
d) 16%n=[tex]\frac{2}{3}[/tex]
[tex]\frac{4}{25} *n=\frac{2}{3}/*\frac{25}{4} <=> n=\frac{25}{2}*\frac{1}{3} => n=\frac{25}{6}[/tex]
e) 16%n=32
[tex]\frac{4}{25} *n=32/*25 <=> n=32*25:4 => n=200[/tex]
f)16%n=480
[tex]\frac{4}{25}*n=480/*25 <=> n=\frac{480*25}{4} => n=3000[/tex]
g)16%n=256
[tex]\frac{4}{25} *n=256/*25 <=> n=\frac{256*25}{4} => n=1600[/tex]
