Hi,

I want to work out how much agencies are charging us for temps. I want to
create a spreadsheet into which the user can enter the hourly rate the agency
is charging.

There will be three columns, headed as follows: 10%, 12.5%, 15%.

As you'd expect, the 10% column will tell the user how much markup the
agency is making if 10% of the hourly rate is made up by their fee.

Can anyone tell me how to do this? It feels like it should be simple, but
nothing I try works.

Cheers

Karl