Books sold in first week = 2,85,891
Books sold in second week = +4,00,768
Total books sold = 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 = 1,14,877
Therefore, 1,14,877 more books were sold in second week.
Complete the drawing shown in Fig. 9.14 to indicate where the free ends of the two wires should be joined to make the bulb glow