Data Interpretation - Bar Charts - Discussion

The bar graph given below shows the data of the production of paper (in lakh tonnes) by three different companies X, Y and Z over the years.

Production of Paper (in lakh tonnes) by Three Companies X, Y and Z over the Years.

2. 

What is the ratio of the average production of Company X in the period 1998-2000 to the average production of Company Y in the same period?

[A]. 1:1
[B]. 15:17
[C]. 23:25
[D]. 27:29

Answer: Option C

Explanation:

Average production of Company X in the period 1998-2000

    = [ 1 x (25 + 50 + 40) ] = ( 115 ) lakh tons.
3 3

Average production of Company Y in the period 1998-2000

    = [ 1 x (35 + 40 + 50) ] = ( 125 ) lakh tons.
3 3


Therefore Required ratio =
( 115 )
3
= 115 = 23 .
( 125 )
3
125 25


Maria said: (Jul 8, 2016)  
Why did they not calculate the average for fraction part?

(115/3) / (125/3).

Sandeep said: (Nov 9, 2016)  
Can anyone explain the step (115/3)/(125/3) = 23/25?

Kamalpreet Kaur said: (Mar 24, 2018)  
How this answer 23/25? because after average the answer is different.

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