Q1: What is the difference between the total productions of the two Companies in the given years ?

ANS:C - 26000

From the line-graph it is clear that the productions of Company X in the years 1997, 1998, 1999, 2000, 2001 and 2002 are 119000, 99000, 141000, 78000, 120000 and 159000 and those of Company Y are 139000, 120000,100000, 128000, 107000 and 148000 respectively. Total production of Company X from 1997 to 2002     = 119000 + 99000 + 141000 + 78000 + 120000 + 159000     = 716000. and total production of Company Y from 1997 to 2002     = 139000 + 120000 + 100000 + 128000 + 107000 + 148000     = 742000. Difference = (742000 - 716000) = 26000.