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If Angela were to paint her living room alone, it would take 3 hours. Her sister Naomi could do the job in 5 hours. How many hours would it take them working together? Express your answer as a fraction reduced to lowest terms, if needed.

Respuesta :

[tex]\\ \sf\longmapsto \dfrac{1}{3}+\dfrac{1}{5}=\dfrac{1}{x}[/tex]

[tex]\\ \sf\longmapsto \dfrac{5+3}{15}=\dfrac{1}{x}[/tex]

[tex]\\ \sf\longmapsto \dfrac{8}{15}=\dfrac{1}{x}[/tex]

[tex]\\ \sf\longmapsto 8x=15[/tex]

[tex]\\ \sf\longmapsto x\approx 2[/tex]

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