This is a spreadsheet to determine time spent on a project dealing with TV SD & HD channels

Each TV can have 32 channels of SD max

Each HD TV can have 24 channels of HD max

Time spent on this project is divided like this, where 1 = 1 day then

1 SD TV = .33

2 SD TV = .5

3 SD TV = 1

1 SD and 1 HD = .66

2 SD and 1 HD = .75

2 SD and 2 HD = 1

2 HD 1 SD = 1

3 HD 1 SD= 1.25

I have an excel document with the amount of channels each TV needs to have divided into 2 columns ( A= # SD channels, B = HD # of HD channels) I am trying to make a third column that takes the channels in each of these two columns and finds the expected time spent on each TV.

I need help formulating the right if/then formula for column "C" which is the time spent column since all of those combinations have different outcomes.

I hope this makes sense. Please help!!