Bar Graph - Data Interpretation Questions and Answers
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Production of paper (in lakh tonnes) by three companies X, Y and Z over the years. Study the graph and answer the questions that follow.
What is the difference between the production of company Z in 1998 and company Y in 1996?
- A. 2,00,000 tons
- B. 20,00,000 tons
- C. 20,000 tons
- D. 2,00,00,000 tons
- E. None of these
Answer: Option B
= [(45 - 25) * 1,00,000] tones
= 20,00,000 tons.
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
- E. None of these
Answer: Option C
Average production of company X in the period 1998-2000
= [1/3 * (25 + 50 + 40)] = (115/3) lakh tons.
Average production of company Y in the period 1998-2000
= [1/3 * (35 + 40 + 50)] = (125/3) lakh tons.
Required ratio = (115/3)/(125/3) = 115/125 = 23/25
What is the percentage increase in the production of company Y from 1996 to 1999?
Answer: Option D
Percentage increase in the production of company Y from 1996 to 1999
= [(40 - 25)/25 * 100]% = (15/25 * 100)% = 60%
The average production for five years was maximum for which company?
Answer: Option E
X = [1/5 * (30 + 45 + 25 + 50 + 40)] = 190/5 = 38
Y = [1/5 * (25 + 35 + 35 + 50 + 40)] = 185/5 = 37
Z = [1/5 * (35 + 40 + 45 + 35 + 35)] = 190/5 = 38
Average production of five years in maximum for both the companies X and Z.
In which year was the percentage of production of company Z to the production of company Y the maximum?
Answer: Option A
The percentage of production of company Z to the production of company Z for various years are:
For 1996 = (35/25 * 100)% = 140%
For 1997 = (40/35 * 100)% = 114.29%
For 1998 = (45/35 * 100)% = 128.57%
For 1999 = (35/40 * 100)% = 87.5%
For 2000 = (35/50 * 100)% = 70%
Clearly, this percentage is highest for 1996.
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