Question

Intr-un recipient sunt de 4 ori mai multe carioci negre decat rosii.
Cate carioci sunt din fiecare fel , daca cele rosii sunt cu 66 mai putine decat cele negre?

Answer 1

r=n-66
n=4r
r=4r-66
4r-r=66
3r=66
r=66:3
r=22 rosi
n=4r=4*22=88 negri
88+22=110 in total

Answer 2

cr=carioci rosii
cn=carioci negre
cn=4*cr
cn=66+cr
4cr=66+cr
4cr-cr=66
3cr=66
cr=66:3
cr=22 (carioci rosii)
cn=4*cr
cn=4*22
cn=88 (carioci negre)