Kirti bookstore sold books worth rs 2,85,891 in the first week of June and books worth rs 4,00,768 in the second week of the month. How much was the sale for the two weeks together? In which week was the sale greater and by how much?

It is given that,

value of books sold in the first week = rs 2,85,891

and Value of books sold in the second week = rs 4,00,768

Total sales of two weeks = 2,85,891+ 4,00,768

                                            =686659

Clearly, 

Sales of the second week are greater than the sale in the first week

Therefore,

The differences in sales= 4,00,768 - 2,85,891

The differences in sales = 114877

The sales of the second week are greater than the first week by 114877 rs.