Răspuns :
Persici un segment,prune doua segmente.In total trei segmente egal 60.un segment egal 20.Deci piersici 20, prune 20+20
a=piersici
b=prune
a+b=60
b=2a
a+2a=60
3a=60
a=60:3
a=20piersici
b=2.20
b=40prune
b=prune
a+b=60
b=2a
a+2a=60
3a=60
a=60:3
a=20piersici
b=2.20
b=40prune