Mathematics, 29.01.2021 03:30 hannahmorgret7811

Един снигорин почиства булевард за 5 часа, а втори снегорин почиства същия булевард за 3 часа. За колко часа двата снегорина ще почистят 4/5 от този булевард, ако работят заедно?

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Един снигорин почиства булевард за 5 часа, а втори снегорин почиства същия булевард за 3 часа. За ко...

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