I use excel spreadsheet for entering my time worked. I have it currently set
to add up hours worked, etc. Is there a formula I can enter to have excel
convert from time format to tenths. For example, if I work 8 hours and 12
minutes, I want it to convert it to 8.2 hours. We use the conversion chart
below. Any suggestions?

1-6 minutes = .1
7-12 minutes = .2
13-18 = .3
19-24 = .4
25-30 = .5
31-36 = .6
37-42 = .7
43-48 = .8
49-54 = .9
55-60 = 1.0