Thanks for the response Daniel.
Unfortunately it doesn't work. I copied and pasted your formula into G2 and
hit enter. Received error message and proposed correction changed ; to :
within your formula. I accepted this change and it still didn't work. I
have tried to solve this myself but to no avail. Any ideas?
--
Regards
Matt


"Daniel.C" wrote:

In cell G2 :
=(G1-$E$2<8)*$C$2+((MIN(G1;$F$2)-MAX(F1;$E$2-1))*$D$2/7)+(G1$F$2)*$C$2
to be pasted in H2, I2 and dragged downward as far as needed.
Regards.
Daniel

Aim: Calculate weekly cost of all equipment using mobilisation (mob),
demobilisation (demob) and weekly rates.

Source data: Mob and demob dates only.

My spreadsheet currently looks like below (Date format eg Xmas = 25-12-08).
Dates shown are for end of week (Friday). Costs tally up in columns G, H and
I.

A B C D E F
G H I
1 Equip $/Mob $/Demob $/Wk Mob Demob 31-10 07-11
14-11
2 EWP 100 100 700 29-10 13-11 400
700 700
3 Fork 100 100 700 05-11 10-11 0
400 400
4
Totals 400 1100 1100

G3 = $100/mob + 3 days (3/7 x $700 = $300) = $400 total

I am looking for a formula to insert into G2, H2, I2, G3, H3 and I3 to
achieve the results shown. Formula needs to reference date entries in E2,
F2, E3 and F3. Any help would be appreciated. Thanks.