A quick question about equity

[cartman]

Assume I am heads up in the big blind against a preflop raiser. I check the flop and he autobets. For a moment let's ignore folding equity--assuming villain will always call the a flop checkraise and a turn bet.

1) Approximately what equity do you think I need against his estimated hand range to warrant a checkraise?


Now to factor in folding equity. Let's say he will fold to our checkraise or our subsequent turn bet 20% of the time.

2) Now approximately what equity do you think I need against his estimated hand range to warrant a checkraise?