Maths Week - The 300 Dollar Question

This week is maths week and we have to solve an equation every day. Today is 2 10s for a five. Here is the skit that we have to solve out.

Skit:
Abbott: Have you got two tens for a five?
Costello: Just so happen to have it.
Lou gives Bud ten dollars and Bud gives Lou five
dollars.
Costello: Just a minute, just one minute!
Abbott: Something wrong?
Costello: Fifteen dollars just went south!
Abbott: What do you mean?
Costello: You gave me a lot of your fast talk, you said 'do you have
two tens for a five' and I gave you two tens for a five.
Abbott: Just a minute, are you accusing me of cheating?
Costello: No, but you got two tens for a five.
Abbott: Alright here's your five now gimme back my two tens.
Costello: Okay, that's better.
Bud gives Lou five dollars and Lou gives Bud ten dollars.
After a slight pause Lou realises he has been conned again.
Costello: What are you doing?
Abbott: What’s wrong now?Costello: Look Abbott, here's two tens gimme a five!
Abbott: Certainly.
Lou gives Bud ten dollars and Bud gives Lou five dollars.
Costello: HA HA HA HAAA!
You did it to me...
You did it to me again.
Abbott: Oh come on.

The 300 Dollar Question.
How much did Lou lose ? $20 x A=$45
Try to act it out with you friend. Use paper as money!
Maybe you can act it out as the famous Bud Abbott and Lou Costello
did!