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Mathematics, 19.05.2021 18:40 189652

Marta trabaja como carpintera y como herrera. Ella gana $20 por hora como carpintera y $25 por hora como herrera. La semana pasada, Marta trabajó en ambos empleos un total de 30 horas y ganó un total de $690. ¿Cuántas horas trabajó Marta como carpintera y como herrera?

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Marta trabaja como carpintera y como herrera. Ella gana $20 por hora como carpintera y $25 por hora...
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