Respuestas

  • Usuario de Brainly
2013-12-17T13:41:14+01:00


1pers=x

2pers=x-20

3pers=x-20

4pers=x-20

       x+3x-60=1000

           

          4x-60=1000

            4x=1060

               x=265

x    + x-20  +x-20  +x-20 =1000

265+245     +245   +245  =1000

1000=1000