Money Kumar: And how much did your t-shirt cost a year ago?
Children: Yes! Rs 250.

Children: I don't know, but when we want to buy this t-shirt, my mother was complaining about prices being high....

Money Kumar: Yes, that's it. The prices of goods and services keep increasing with time. So the value of the currency keeps decreasing.
Children: You mean, you can buy less with the same money or pay more for the same quantity of goods?