Question

.- 3 kilos de jitomate y 2 de papa cuestan en total $160. 2 kilos de jitomate y 3 de papa cuestan $200. ¿Cuánto cuesta cada kilo?

Answer 1

J: jitomate                 3J+2P=160......(-×3)→ -9J-6P=-480

P: papa                      2J+3P=200......(×2)→  4J+6P=400

                                                                      -------------------

                                                                       -5J=-80

                                                                         J=16    

ENTONCES:  2J+3P=200

                       32+3P=200

                          3P=168

                             P=56