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Mathematics, 05.08.2020 07:01 KimberlyC
Dos secretarias deben escribir el mismo número de cartas. La primera escribe 2 cartas por hora y la otra, 5 cartas por hora. Si la primera ha empezado 6 horas antes que la segunda. ¿Cuántas horas
trabajó la primera?
Ayuden!!
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Dos secretarias deben escribir el mismo número de cartas. La primera escribe 2 cartas por hora y la...
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