Differnce between the production of foodgrains during 2004 and 2008 = 35 - 30 =5 thousand tonnes.

Percentage increase in food grain production = (30 - 15 )/15 x 100 = 100%

Total production in 2005 and 2007 = 20 + 15 = 35 thousand tonnes. This total production is equal to the production in the year 2004.

Rate of change in the amount of production in the year 2004 over the year 2003 = (Production in 2004 - Production in 2003 ) x 100/ Production in 2003
Rate of change in the amount of production in the year 2004 over the year 2003 = (35 - 30) x 100 / 30 = 5 x 100 / 30 = 16.67%
Similarly
Rate of change in the amount of production in the year 2006 over the year 2005 = (25 - 20) x 100 / 20 = 5 x 100/20 = 25%
Rate of change in the amount of production in the year 2007 over the year 2008 = (30 - 15) x 100 / 15 = 15 x 100/15= 100%
Rate of change in the amount of production in the year 2006 over the year 2007 = (25 - 15) x 100 / 15 = 10 x 100/15= 66.67%
Hence, it is clear that the rate of change in the amount of production during the consecutive years 2007 and 2008 is at the highest level.

Mean of annual increase in sale from 2003 to 2008 = (Sale in 2008 - sale in 2003 )/ (Difference in years)
Mean of annual increase in sale from 2003 to 2008 = 10.5 - 8.5/ 5 = 0.4

Annual mean profit of the store (rupees in ten thousands)
= (6.5 + 11.5 + 7.5 + 4.5 + 9.5 + 11.5 + 10.0 + 8.5)/8 = 69.5/8 =8.7 (approx.)

Percentage of profit on the total in 2001 = Total profit in rupees x 100/ total sale in rupees.
Percentage of profit on the total in 2001 = 6.5 x 10000 x 100/3.5 x 100000 = 18.57
Percentage of profit on the total in 2002 = 11.5 x 10000 x 100/4.5 x 100000 = 25.56
Percentage of profit on the total in 2003 = 7.5 x 10000 x 100/8.5 x 100000 = 8.82
And Percentage of profit on the total in 2005 = 9.5 x 10000 x 100/ 8.5 x 100000 = 8.82
? Percentage of profit on the total sale in 2002 was the highest level.

Required profit = 100 x 85 /6.5 = 131

Profit per cent during the year 2005 as compared to the previous year =(95 - 45) x 100/4.5 = 111.11%
Hence, profit in the year 2005 was more than 100% as compared to the previous year.

According to the graph, the two successive weeks vis., 30 June - 7 July shows highest increase of 180 - 142 = 38 in the number of persons killed.