Hi Oatmeal,

I have to go out now, but I'll get back to you later on (unless
someone else does beforehand).

Pete

On Feb 21, 7:34 pm, "oatmeal" wrote:
Yes the other fields are there, as far as type, but I just wanted to
get some sort of formula down.

So if I have 500 concrete mixers rented out, and I have 550 total in
inventory. With a 5% monthly sales growth that is approximately .2%
daily sales growth. With that in mind, each day you would be rented an
additional 1 mixer, and would run out of stock in 50 days.

My math could be wrong on that, it's not my strong suit. But if I can
understand how to put that formula together, I could also apply it to
return trends. So if on average I'm getting 30 mixers back a month, I
can extend the amount of days that I would exhaust my inventory.

It doesn't need to be 100% accurate since it's just forecast, but it
does have to spit out "number of days left" which is a weird variable
to pull.

Pete, if I did calculate it by real numbers by day, I still have the
same problem of predicting when I'm going to run out. I want to do the
math on paper, not in my head. Hopefully!

On Feb 21, 2:17 pm, "Pete_UK" wrote:



I think you will need another field which has dates in it, so, for
example, each day you record number of tools going out and then you
can add this in a cumulative sum column and subtract it from the
number of tools you have in your inventory.

It strikes me as a bit simplistic, though - if a customer wants to
hire a concrete mixer and you don't have any in stock (but you know
that you do have 300 other items), that's not really going to help -
shouldn't you also record the type of tools being hired out and then
keep track of each type?

Hope this helps.

Pete

On Feb 21, 7:09 pm, "oatmeal" wrote:

Just as an example, let's say I'm a rental company that rents tools
for long periods of time. I want to understand how many tools are
being rented, how many I have left in inventory still available to
rent, and when I am going to exhaust my inventory. So for instance, I
have the following three primary fields:

1. Number of tools out for rent.
2. Number of tools in inventory still available for rent.
3. Sales growth month over month.

So using the sales growth, I should be able to roughly predict when I
am going to run out of inventory (assuming my sales growth is going to
continue to rise.)

I can't wrap my head around the logic to be honest. The variable I
want is the number of days left until I am going to run out of tools
for run.

Any Ideas?- Hide quoted text -

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