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e bn Logicus?????????????????????????????????????? zi te rog mai rpd
eu zic ca este distanta de 8Km
dar ce castigam daca stim raspunsul?
Solutie frumoasa data de Ionut Ghinea, Ploiesti
dar daca nu ma insel se face chestia asta in clasa a 6 foarte simplu
Pentru 7 Ioana care a spus: (May 18th, 2009) 2 kilometri De ce nu 20Km sau 200Km sau... Oare de ce 2 kilometri?
2 kilometri
Notam cu T- timpul in ore, cu d-distanta in km. Daca adaugam 5 minute de intarziere, exprimate in ore inseamna T+5/60 sau daca scadem 10 minute ajunse prea devreme avem T-10/60. Din formula distanta=timp*viteza iese sistemul de ecuatii: T+5/60 = d/4 T-10/60=d/8 Scadem cele 2 ecuatii => 15/60=d/4-d/8 => 1/4=d/8 => d=2 km. Distanta pana la locul de intalnire este de 2 km. Ionut Ghinea, Ploiesti
Pentru 4 Catalin (May 6th, 2009)- Un sfat : citeste atent enuntul si...vei gasi TIMPUL...
Care e timpul?
Indicatie: Se presupune ca vitezele date sunt constante si se foloseste relatia: DISTANTA = VITAZA x TIMP
indicii...
Draga logicus,este o problema de clasa a cata?
