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Cierto trabajo lo puede realizar Damian en 4 horas y Beatriz en 6 horas?

Cierto trabajo lo puede realizar Damian en 4 horas y Beatriz en 6 horas. ¿En cuánto tiempo lo realizarán ambos? (Procedimiento, porfavor) : c.

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10 horas lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll.

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10 horas lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll.

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Lulap1
2

4 + 6≈10 .