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Mathematics, 05.03.2021 23:30 victoria6929

Dos obrers, en Josep i en Joan, tarden 2 hores i 24 minuts a construir un envà, treballant-hi conjuntament. En Josep, treballant-hi tot sol, hauria tardat 6 hores a fer la mateixa feina. Quant hauria tardat en Joan sense l’ajuda del seu company? Un altre dia, en començar a fer un envà igual que l’anterior, el capatàs de l’obra els avisa que alguns dels maons nous són defectuosos i el ciment no s’hi adherirà en assecar-se. A mesura que construeixen l’envà, el seu cap va revisant-lo i en va traient alguns maons. D’aquesta manera, tarden 4 hores a fer-lo. En aquesta situació, quant hauria tardat en Josep en acabar l’envà sense l’ajuda del seu company?

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Dos obrers, en Josep i en Joan, tarden 2 hores i 24 minuts a construir un envĂ , treballant-hi conjun...
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