" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Perla: x-10
Alejandra: x+(x-10)= 2x-10
(x)+(x-10)+(2x-10)=120
x+x-10+2x-10=120
4x-20=120
x=(120+20)/4
x=35
ahora sustituimos x
Diana: 35 años
Perla: 35-10=25 años
Alejandra: 2x-10 --------=60 años