Superb explanation
Good job Naveen
But yes I agree with Gaurav that this is a bit long & can be short. But honestly, I think I will never forgot this story & will never ever get confused between quantity purchased & quantity used.
No teacher in Delhi explains the diff between quantity purchased & quantity used in Standard Costing.
Dear KzN,
I have several friends in Pune who has taught from Rakesh sir. As per them he is a good teacher but even he don't teaches the concept about quantity purchased & quantity used (no offense Intended).