Mathematics
Mathematics, 20.09.2019 23:00, darwin59651

Duas empreiteiras farão conjuntamente a pavimentação de uma estrada, cada uma trabalhando a partir de uma das extremidades. se uma delas pavimentar 2/5 da estrada e a outra os 81 km restantes, a extensão dessa estrada é de?

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Duas empreiteiras farão conjuntamente a pavimentação de uma estrada, cada uma trabalhando a partir d...

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