October 2018 1 39 Report

PIerwszy rowerzysta wyjezdza na trase o godz 12 z predkoscia 20 km/h , drugi rowerzyta wyjezdza o 15 w trzy razy krotsza droge z predkoscia 15 km/h. Oblicz dlugosc trasy obu rowerzysów skoro wróca o tej samej godzinie


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