Question

Which lines best demonstrate the irony in this passage?

Eight dollars a week or a million a year—what is the difference? A mathematician or a wit would give you the wrong answer.

And then an ecstatic scream of joy; and then, alas! a quick feminine change to hysterical tears and wails, necessitating the immediate employment of all the comforting powers of the lord of the flat.

Maybe the hairs of my head were numbered," she went on with sudden serious sweetness, "but nobody could ever count my love for you. Shall I put the chops on, Jim?"