rasstoyaniye mejdu domom I wkoloy, qde ucitsa Rena, sostavlayet 325 waqov Reni, no 285 waqov ee brata.Rena iz wkoli domoy, a ee brat iz doma v wkolu vixodat v odno I to je vrema.Komu ostanetsa proyti bolwe, esli kajdiy iz nix proydet 150 waqov?

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Reni325-150=175285-150=135i esli Reni delaet do shkoly bolshe shagov, chem brat, znachit dlina shaga koroche, i za odinakovoe vremya brat prohodit rasstoyanie bolshe chem Reni