Sub dips for pushups?

[firedepot]

What is the correct ratio if I sub dips for pushups?

[splint]

The advanced workout plan includes dips:

http://www.simplefit.org/advanced-bodyw ... cises.html

But if you wanted to sub dips for push-ups in the basic workout, I would figure out how many push-ups I could do in a row, then figure out how many dips I could do in a row and use that ratio. For example, if I could do 30 push-ups in a row and 15 full body dips in a row, I'd use half as many dips as push-ups.