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Mathematics, 19.05.2021 18:50 nook4boo

El Sr. Negrón tiene que redactar una serie de cartas en su oficina. A lourdes le toma 6 horas pasar todas las cartas. A su compañera Rosabel, le toma 9 horas en realizar la misma tarea. Si
ambas trabajan juntas para hacer todo el trabajo de la oficina,
A. ¿Cuánto tiempo le tomará a ambos realizar el trabajo?
B. Explica con palabras, números o símbolos como obtuviste la respuesta."
Please help me . Spanish

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