annamariaafowyhrq
07.01.2020 •
Mathematics
Bukiet z goździków i róż, w którym goździków jest 2 razy więcej niż róż jedna róża 4zł jedna goździk 3zł.czy bukiet mógł kosztować 35zł? pls o odp
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Ответ:
Nie, nie można mieć bukietu, który kosztuje nieparzystą liczbę złotych.
1 róża => 2 goździki => 4 + 2*3 = 10 zł
2 róży => 4 goździki => 2*4 + 4*3 = 20 zł
3 róży => 6 goździki => 3*4 + 6*3 = 30 zł
itd.
Głównym powodem jest to, że mnożenie liczby nieparzystej przez liczbę parzystą zawsze daje liczbę parzystą.
Ответ: