Odpowiedzi

2009-11-19T22:30:12+01:00
160km - 1h
50km - x
160x - 50
x = 50/160
x= 0,3125

0,3125 *60min = 18,75 min = 18min 45s

Pozdrawiam ;)
2009-11-19T23:08:37+01:00
V=160 km
s=50km
t=?

v=s/t /t
vt=s /:v
t=s/v

t=50/160=0,3125
60*0,3125=18 3/4 min= 18min 45sek