Books sold in first week = 2,85,891
Books sold in second week = 4,00,768
Total books sold = 285891+400768 = 6,86,659
Since, 4,00,768,> 2,85,891
Therefore sale of second week is greater than that of first week.
Books sold in second week = 4,00,768
Books sold in first week = 2,85,891
More books sold in second week = 400768-285891 = 1,14,877
Therefore, 1,14,877 more books were sold in second week.