Letter to your father requesting him to send you some money which you require for purchasing books.
My Dear Father,
I am quite well here, and hope all of you are also well there.
These days I am working hard for the examinations which are near. My teachers also are working in the school. Today, my Physics teacher suggested a new book in the Class. He says the book is very useful. It costs one hundred ninety rupees only. Kindly send the amount of M.O., so that I may purchase the book.
Convey my respects to mother, and love to younger brothers and sisters.
With respects to you, I am.
Yours affectionately,
XYZ.