Simple for you, difficult for me

GW1

New Member
Joined
Nov 23, 2010
Messages
21
Hi Guys

I have a dataset with car usage on it (driver service). I created a distinct flag and aggregated accordingly, bringing my set down from 50,000 to 10,000. I have the following fields: Date, pick up time, drop off time and location (and some others). I have also created various diffferent flags.

I need to understand how many cars were being used at any given point in time (which is straight forward to do, via pivot table?) and also (more importantly), say there are 10 booked requests in a day (given that a car can be busy for 1 hour and 30 minutes at a time, how many cars are need to fulfil the 10 different journeys. I know that if all the cars were booked for the same time, that would be 10 cars, but how do I work it out for when the requests are spread over the day?

I tried created a matrix to illustrate this, but just can get it to work. The idea being this is that i tried to 'plot' the start and the end times (when a car is in use). My formula skills just aren't up to scratch.

Can anyone suggest an approach/formula I can use please?

Thanks very much
 

Excel Facts

What does custom number format of ;;; mean?
Three semi-colons will hide the value in the cell. Although most people use white font instead.
Select a start date from the dropdown in H2 that's in the range of the data.
 
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