Răspuns :
Daca Adi are 15 ani, Lina are 60 ani(15 ·4=60).
Radu are 56 ani(60-4).
Radu are 56 ani(60-4).
l→ Lina
a→ Adi
r→ Radu
l=4a
r=l-4
a=15
l=4·15=60
r=60-4=56
Deci:
Lina are 60 de ani.
Adi are 15 ani.
Radu are 56 de ani.
a→ Adi
r→ Radu
l=4a
r=l-4
a=15
l=4·15=60
r=60-4=56
Deci:
Lina are 60 de ani.
Adi are 15 ani.
Radu are 56 de ani.