" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
y - cena stolika
x+y=4050
25%x+40%y=1260
y=4050-x
0,25x+0,4y=1260
y=4050-x
0,25x+0,4(4050-x)=1260
y=4050-x
0,25x+1620-0,4x=1260
y=4050-x
-0,15x=-360|:(-0,15)
y=4050-x
x=2400
y=4050-2400
y=1650
odp: Za lustro zapłacił 2400zł a za stolik 1650zł