Si 2 / 3 de kg?
Si 2 / 3 de kg. De manzana cuestan 10. 00, ¿cuanto cuestan 4 kilos ? ¿y 8 kilogramos?
Si 2 / 3 de kg. De manzana cuestan 10. 00, ¿cuanto cuestan 4 kilos ? ¿y 8 kilogramos?
En resumen
2 / 3 Kg = = = = = > 10. 00 4 Kg = = = = = = = > X X = [10. 00 x 4 Kg] / [2 / 3Kg] X = 60 4 Kg, cuestan 60 8 Kg 2 / 3 Kg = = = = = = = = > 10. 00 8 Kg = = = = = = = = > X X = [10. 00 x 8 Kg] / [2 / 3 Kg] X = 120 Rta : 4 Kg Cuestan 60 8 Kg Cuestan 120.
2 / 3 Kg = = = = = > 10.
00
4 Kg = = = = = = = > X
X = [10.
00 x 4 Kg] / [2 / 3Kg]
X = 60
4 Kg, cuestan 60
8 Kg
2 / 3 Kg = = = = = = = = > 10.
00 8 Kg = = = = = = = = > X
X = [10.
00 x 8 Kg] / [2 / 3 Kg]
X = 120
Rta : 4 Kg Cuestan 60 8 Kg Cuestan 120.
15 manzanas cuestan S / . 7. 20.
Llamaremos x al precio del kg de peras y al precio del kilo de manzanas 2x + 3y = 7, 80 5x + 4y = 13, 20 por igualación despejamos x en las dos 7, 80 - 3y 13, 20 - 4y x = - - - - - - - - - - - - - - - x = - - - - - - -…