Explicación paso a paso:
Si 1 hora equivale 60 minutos entonces :
[tex]\frac{60 min}{1 hora} x 0.9 hora = 60 x0.9 = 54 minutos[/tex]
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Explicación paso a paso:
Si 1 hora equivale 60 minutos entonces :
[tex]\frac{60 min}{1 hora} x 0.9 hora = 60 x0.9 = 54 minutos[/tex]