" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
m.c.(t2-t1)+m.Kl=m.c.(t2-t1)
a.0,5.20+a.80=B.1.100
10a+80a=100B
90a=100B
a:B=10:9