Directions: The following bar graph shows the number items (in thousand) produced by two companies A and B and the line graph shows the percentage sale of items of these companies over the years.

Production of Company A and B

% Sale of Company A and B

Important for :
1
What is the total number of items sold by Company B in the year 2010?
» Explain it
B
 Items sold by B2010 = 45000 × 56 = 25200 100

Hence, option B is correct.

2
What is the difference between the total number items sold by Company A in the year 2012 and that in 2011?
» Explain it
D
 Sale A2011 = 60000 × 36 = 21600 100

 Sale A2012 = 92000 × 32 = 29440 100

∴   Difference = 29440 – 21600 = 7840.
3
The items sold by Company B in the year 2011 is approximately what per cent of the items sold by it in the year 2012?
» Explain it
C
 Reqd% = Items sold by Company B2011 × 100 Items sold by Company B2012

 = 56 × 50 × 100 = 58.3% ≈ 58% 60 × 80

Hence, option C is correct.

4
What is the average number of items sold by Company A during the year 2008 to 2012?
» Explain it
E
 = 35% of 50 + 35% of 72 + 47% of 48 + 36% of 60 + 32% of 92 5

 = 17.5 + 25.2 + 22.56 + 21.6 + 29.44 5

 = 116.3 = 23.26 thousand = 23260 5

Hencce, option E is correct.

5
In year 2011, the number of items sold by Company B is approximately what percentage more or less than the number of items sold by Company A?
» Explain it
D
 The number of items sold by B2011 = 50000 × 56 = 28000 100

 The number of items sold by A2011 = 60000 × 36 = 21600 100

 ∴   Reqd% = (28000 – 21600) × 100 = 6400 = 29.62 ≈ 30% 21600 216
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