Profit and Loss , Single discount?

From the following Statement of Profit and Loss, prepare Common size Statement of Profit and Loss and give comments:

From the following Statement of Profit and Loss, Prepare Comparative Statement of Profit and Loss: Notes to Accounts

A single discount equivalent to a single discount seriesof 25%,20%,10% is :

A series discount of 20%,10% is equivalent to a single discount of

Prepare Comprative Statement of Profit and Loss from the following Statements of Profit and Loss,