zara9817 zara9817

30-05-2024
Mathematics

Answered

Jeden dělník potřebuje na určitou práci 40 hodin, druhý by tuto práci provedl již za 30 hodin. Několik hodin pracovali společně, potom byl druhý dělník odvolán a první dokončil práci sám za 5 hodin. Kolik hodin pracovali společně a jakou část práce každý z nich vykonal?

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