Răspuns :
daca parcurge 100 m in 10 s, inseamna ca intro secunda parcurge 100:10=10
in 60 de s parcurge 60ori10=600
in 60 de s parcurge 60ori10=600
100 m............10secunde
x..................60 secunde
x=100·60/10⇒600m
x..................60 secunde
x=100·60/10⇒600m