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1o )
=5 * 6 horas
= 30 consumo
2o)
=12 * 10
= 120 consumo
30 .................. $15
120 ................ $x
30 * x = 120 * 15
30x=1800
x= 1800/30
x= 60
Respuesta: $ 60
X=15x2x6,x5/(12x10x2
X = 900/240=3.75 pesos