Live hand $1/$2 NL, I know I'm behind - calling a mistake?

[Ontario_Tory]

I thought I was clear that I knew the $50 bet was too much on the flop. Reason for it was read-specific - he was folding to overbets, was calling down (even when beaten) standard cbets...

Frankly I shouldn't have bet ANYTHING on the flop based on my read.

My question was specific to the math of the extra $20 after the checkraise.

thx for the answers.