Directions: Study the following graph carefully and answer the questions given beside:

Units of Raw Material Manufactured and Sold by a Company over the Years (units in crore)
Important for :
1
Find the difference between the average number of units sold and manufactured over the years?
» Explain it
D
Avg of units sold over the years
 = (4.5 + 5 + 5.5 + 5 + 6) × 10000000 5
 = 26 × 10000000 5
=   52000000

Avg of units manufactured over the years
 = (3.5+ 4 + 5 + 3 + 5.5) × 10000000 5
 = 21 × 10000000 5
=   42000000

Reqd difference
=   52000000 – 42000000
=   10000000.

Hence, option D is correct.

2
What is the respective ratio of units sold and manufactured in 2007 & 2009 together to 2008 and 2011 together?
» Explain it
E
Units sold and manufactured in year 2007
=   3.5 + 4.5   =   8 crore

And in year 2009
=   5 + 5.5   =   10.5 crore

Sum of the units of both years 2007 and 2009
=   8 + 10.5   =   18.5 crore

Similarly,
Units sold and manufactured in year 2008
=   4 + 5   =   9 crore

And in year 2011
=   5.5 + 6   =   11.5 crore

Sum of the units of both years 2008 and 2011
=   9 + 11.5   =   20.5 crore

Reqd ratio
=   18.5 : 20.5   =   3.7 : 4.1

Hence, option E is correct.

3
The total number of units sold and manufactured in year 2008 & 2010 together is what per cent to the reamaining years' manufactured and sold units?
» Explain it
C
Total number of units sold and manufactured in year 2008 & 2010 together = (5 + 4) + (5 + 3) = 17

Remaining years are: 2007, 2009 & 2011

Toatal of remaining years' units = (3.5 + 4.5) + (5 + 5.5) + (5.5 + 6) = 8 + 10.5 + 11.5 = 30

 Reqd % = 17 × 100 = 56.67% 30
4
What is the per cent increase in the number of units sold in the year 2011 from the previous year?
» Explain it
B
Total number of units sold in previous year (2010) = 5 crore

Total number of units sold in 2011 = 6 crore

 Reqd % = 6 – 5 × 100 5

 = 1 × 100 = 20% 5
5
By how much per cent is the sold units of 2011 more than the manufactured units of 2008?
» Explain it
A
Total number of units manufactured in 2008 = 4 crore

Total number of units sold in 2011 = 6 crore

 Required %= 6 – 4 = 2 × 100 = 50% 4 4