It was the end-of-year exam to qualify for the prestigious Top Class at school and with his paper spoiled brat Tommy handed in a $100 note to his teacher and winked with a whisper: “A dollar for each point, Sir; I know all about percentages”
The next day the teacher returned the papers to the students and marked bold on spoiled brat Tommy’s paper was: 40% And the teacher pointed to a $60 note attached and he said with a wink and whisper: *“That’s the change, Tommy - a dollar a point, yeah”
...another existing joke transformed into verse...I think the humour's intact in this one...the verse did not demand much for this one...