Răspuns :
5*4=20 m parcurge melcul in 4 zile
9*3=27 m parcurge furnica in 3 zile
Melcul=50-20=30 m
Furnica=50-27=23 m
9*3=27 m parcurge furnica in 3 zile
Melcul=50-20=30 m
Furnica=50-27=23 m