" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(30 - x) kg - solanki 3%
2% * 30 = 3%(30 - x)
0,02 * 30 = 0,03(30 - x)|*100
60 = 90 - 3x
3x = 90 - 60
3x = 30
x = 10
Odp: Odparowano 10 kg wody .