Question

difference between formal and informal letter.... Layout

Answer 1

The layout of formal letter comprises of the person to whom you are writing for example-
The Principal
The Bishops School
Camp

While the informal letter does not have that.

Answer 2

FORMAL:-
sender's address
date
receiver's address
subject
salutation
{
body
}
yours sincerely
name
designation

INFORMAL:-
sender's address
date
salutation
{
body
}
yours --
name