Moon Rocket Lander.

[ggauny@live.fr]

Hi,
In my search to do my program, which is not yet finished because so hard to
do, I was looking for all litterature I have on this subject.

I've found this in an old HP 65 notes I have. But in this HP65's game we've
120 fuel units, like in HP25, but in HP67 we dispose only 60 units.

How can I change this formulaes to get the solution for how many burns of
how many units ?

May be mathematicians can help me ?