Mathematics Test
Joe walked into his dad's study while his dad was working on the computer.
"Dad", said Joe, "Remember when you told me you'd give me 20 dollars if I passed my math test"?
Dad nodded.
"Well, the good news is that I just saved you 20 bucks".
and another
Sam: Dad, would you do my math homework for me?
Dad: No, son, it wouldn’t be right.
Sam: Well, at least you could try.
"Dad", said Joe, "Remember when you told me you'd give me 20 dollars if I passed my math test"?
Dad nodded.
"Well, the good news is that I just saved you 20 bucks".
and another
Sam: Dad, would you do my math homework for me?
Dad: No, son, it wouldn’t be right.
Sam: Well, at least you could try.