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Mathematics, 01.05.2021 23:30 bigchriss

Un fabricante de paños quirúrgicos obtiene un beneficio de 0,80 € por cada paño que sale de un taller para la venta, pero sufre una pérdida de 0,60 € por cada paño
defectuoso que debe retirar. En una jornada ha fabricado 21000 paños, obteniendo
unos beneficios de 9688 €. ¿Cuántos paños quirúrgicos válidos y defectuosas se han
fabricado en esa jornada?

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