I have a spreadsheet and I want to have ages in a YY: MM format (excel doesnt like that, any help would be great). eg. 11:08 is 11 years and 8 months.

I will have an actual age for every entry and then a reading age in the same format for every entry. I will then calculate the difference and put them in order of the highest difference.

I basically need to know the formula for the format I want to use as my efforts have not come to fruition as yet!

Thank you in advance, this is a great little community by the looks of it!

Carl