👤

1 album...? file
70 albume...2100 file
69 albume...? file


Răspuns :

Aplici regula de trei simpla si obtii exercitiul problemei:
1 album.................x file
70 albume..............2100 file
x=(2100*1):70=2100:70=30 file are un album

1 album .................30 file
69 albume................y file
y=(69*30):1=69*30=2070 file
daca 70 de albume=2100file  =>un album=2100:70( ca sa iti fie mai usor fa asa)
210:7( si iti da acelasi rezultat) =30file
69 de albume=30 file *69=2070
                     sau  2100file-30 file=2070 file