Question

selling price of 30 articles is equal to the cost price of 20 articles. find the loss or profit percentage?
please answer quickly

Answer 1

Let = selling price = cost price.

The article cost \[\frac{ P }{ 20}\]dollars each.
they sold for \[\frac{ P }{ 30 }\] dollars each.

Answer 2

You do \[\frac{ P }{ 30 } - \frac{ P }{ 20 } \]

Answer 3

do you know how to solve from there ? :)