> Cheers Thanks, anyway i already did writing and other stuff but the only
> problem is that i don't know to start my code. :(

Try to create a Vehicle class where you compute the arrival time and
the number of passengers based on a departure time. Then make a loop
of say 500 vehicles (to be sure everybody arrive at the end) and
create a list of vehicles that are launched every 5-35s. Do not forget
to sort the list based on arrival time rather than departure time.

In the end, it should give you something like

[...]
442 passengers where there after 654 seconds
444 passengers where there after 691 seconds
448 passengers where there after 717 seconds
449 passengers where there after 746 seconds
489 passengers where there after 761 seconds
529 passengers where there after 790 seconds

Cheers,

-- 
JJ Fleck
PCSI1 LycñÆ KlñÃer