If the value to be increased was in A1, use a formula in an adjacent
column:- =A1*1.15 and copy that formula down for all cells that you need
Regards
Philip

"Sian" wrote in message
...
I have been given a worksheet in which all the figures in 12 columns need
to
be increased by 15% and can't figure out what the correct formula would
be -
any help much appreciated!