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)
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