Re: How to get hours from hh:mm

[Cecil Westerhof]

Pascal Bourguignon wrote:

> Cecil Westerhof <dummy@dummy.nl> writes:
> 
>> I have a table in org-mode with time needed to travel from A to B an the
>> number of km. I would like to get the average speed. How do I convert a
>> time? For example 0:45 becomes 0.75.
> 
> How do you know that 0:45 becomes 0.75?
> 
> How did you do it?

I did not. I want. 0:45 is three quarters of an hour, so in mathematical
notation 0.75.
What I would like:
- the first field contains 90
- the second field contains 0:45, or 00:45
- the third field is computed to 120