(a) (i) In 2002, the sales were Rs 4 crores.
(ii) In 2006, the sales were Rs 8 crores.
(b) (i) In 2003, the sales were Rs 7 crores.
(ii) In 2005, the sales were Rs 10 crores.
(c) (i) In 2002, the sales were Rs 4 crores and in 2006, the sales were Rs 8 crores. Difference between the sales in 2002 and 2006 = Rs (8 − 4) crores = Rs 4 crores
(d) Difference between the sales of the year 2006 and 2005 = Rs (10 − 8) crores = Rs 2 crores
Difference between the sales of the year 2005 and 2004 = Rs (10 − 6) crores = Rs 4 crores
Difference between the sales of the year 2004 and 2003 = Rs (7 − 6) crore = Rs 1 crore
Difference between the sales of the year 2003 and 2002 = Rs (7 − 4) crores = Rs 3 crores
Hence, the difference was the maximum in the year 2005 as compared to its previous year 2004.