" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
t = r * t0
r = 1 / Pierwiastek z 1 - (1/0,64)
30 + x = 5x / 3
(30 + x) / x = 5/3
30/x + 1 = 5/3
30/x = 2/3
90 = 2x
x = 45
Odpowiedź: Ojciec musi lecieć 45 lat.