za odběr novinek
Testy ZDARMA
OSP a ZSV Scio a TSP MUNI
Úloha ID 1782 - 
Máme tři výrobní linky X, Y a Z. Linka X vykoná za 45 minut stejné množství práce jako linka Y za 75 minut a také stejné množství práce jako linka Z za 30 minut.
Urči pravdivé tvrzení:
Správná odpověď je: A
Zadání můžeme přepsat do rovnice například jako: 45X = 75Y = 30Z. Rovnice si převedeme tak, aby byly jednoduše srovnatelné; p bude značit množství práce za 45 minut: X = p, Y = 3/5 p, Z = 3/2 p. Linky X a Y tak společně vykonají 8/5 p (= 16/10 p), zatímco linka Z vykoná pouze 3/2 p (= 15/10 p).
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