Răspuns :
Răspuns:
a)e-suma primita de Emilian
j-suma primita de Jorj
{e;j} d.p. {4;6} => e/4=j/6=k
e/4=k => e=4k
j/6=k => j=6k
e+j=300
10k=300
k=30 => e=120 lei
j=180 lei
b)p% din 300lei =300-120
p/100 • 300=180
3p=180 =>p=60%
c)j=50 => e=250
{250;50}i.p.{2;n} => 500=50n => n=10
Răspuns:
Explicație pas cu pas:
a/4=b/6=(a+b)/(4+6)=300/10=30
a) a/4=30 a=120lei
b/6=30 b=180 lei
b) 180/300×100=60%
a/1/2=b/1/n=(a+b)/(1/2+1/n)=300/(1/2+`1/n)
300/(1/2+`1/n)=50/1/n 6/(n+2)/2n=1/1/n ⇒ 12/(n+2)=1
12=n+2 n=10