Respuestas

2012-06-14T16:52:19+02:00

x - 1 centimo

y - 2 centimos

z - 5 centimos

 

x+y+z=92

x=z/3

z=5y

 

x=5y/3

 

5y/3+y+5y=92

5y+3y+15y=276

23y=276

y=12

 

z=5*12

z=60

 

x=5*12/3

x=20