Value of Books sold in $$1$$st week$$=$$Rs. $$2,85,891$$
Value of books sold in $$2$$nd week$$=$$Rs. $$4,00,768$$
Total sale$$=$$Sale in $$1$$st week$$+$$ Sale in $$2$$nd week$$=2,85,891+4,00,768$$
$$285891$$
$$+400768$$
___________
$$686659$$
___________
The sale for the two weeks together was $$6,86,659$$.
Since $$4,00,768 > 2,85, 891$$, sale in $$2$$nd week was greater than $$1$$st week.
$$400768$$
$$-285891$$
___________
$$114877$$
___________
$$\therefore$$ The sale in $$2$$nd week was longer than the sale in $$1$$st week by Rs. $$1,14,877$$.