CAT Questions | CAT LR DI

Data Interpretation for CAT | DI: Bar Graphs

CAT DI LR section has become increasingly tough beginning from 2015. However, Understanding the basics of Bar graphs, Pie Charts, Multiple graphs, Line Graphs etc forms an integral part of solving tougher CAT level DI LR questions for the CAT Exam. This question is from DATA Interpretation for CAT - Bar Graphs.

DI Bar Graphs: Stacked Bar Graphs

The following chart gives the revenue share of different companies in the tech sector in Cuckooland. :

Data Interpretation: Bar Graphs

Question 3: In 2004, the entire industry added $4bn, of which an increase of $1bn was contributed by COGN, what was the growth rate seen by the entire sector in 2004?

  1. 20%
  2. 34%
  3. 52%
  4. Cannot be determined

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Explanatory Answer

Method of solving this Question on Data Interpretation for CAT

Let 2004 revenues be P and 2003 reveneus be Q.
We know that P – Q = $4bn
We also know that 19% of P – 16.9% of Q = $ 1bn.
We need to find \\frac{P}{Q}\\)-1 as a percentage.

It is crucial to isolate what you are looking for in these types of questions.
We know that P – Q = $4bn. We also know that 19% of P – 16.9% of Q = $ 1bn.
We know that P – Q = 4(19% of P – 16.9% of Q)
Or P – Q = 0.76P – 0.676Q.

Or, 0.24P = 0.324Q. Or, \\frac{P}{Q}\\) = 1.35

Overall growth rate = 35%

The question is " what was the growth rate seen by the entire sector in 2004?"

Hence, the answer is "35%".

Choice B is the correct answer.

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