Comprehension
Refer to the bar chart given below and answer the questions.
Question: 1
The difference in the sales of cellular phones for the years 1997 and 1999 is?
The difference in the sales of cellular phones for the years 1997 and 1999 is?
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In bar graph questions, always read values carefully and subtract correctly to avoid calculation errors.
Updated On: Apr 21, 2026
- 500 units
- 1,000 units
- 5,000 units
- 18,000 units
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The Correct Option is D
Solution and Explanation
Concept:
Difference = Larger value $-$ Smaller value.
Step 1: Find sales in 1997.
\[ 1997 = 48,000 \]
Step 2: Find sales in 1999.
\[ 1999 = 30,000 \]
Step 3: Calculate difference.
\[ 48,000 - 30,000 = 18,000 \]
Hence, the difference is 18,000 units.
Step 1: Find sales in 1997.
\[ 1997 = 48,000 \]
Step 2: Find sales in 1999.
\[ 1999 = 30,000 \]
Step 3: Calculate difference.
\[ 48,000 - 30,000 = 18,000 \]
Hence, the difference is 18,000 units.
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Question: 2
The sum of sales of cellular phones in the years 1999 and 2001 is equal to that of which year?
The sum of sales of cellular phones in the years 1999 and 2001 is equal to that of which year?
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In comparison questions, first compute the required value, then match it with given options.
Updated On: Apr 21, 2026
- 1997
- 1998
- 2000
- 2002
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The Correct Option is A
Solution and Explanation
Concept:
Add the sales of given years and compare with other years.
Step 1: Find sales in 1999 and 2001.
\[ 1999 = 30,000,\quad 2001 = 18,000 \]
Step 2: Find their sum.
\[ 30,000 + 18,000 = 48,000 \]
Step 3: Compare with other years.
\[ 1997 = 48,000 \] Thus, the sum matches the year 1997.
Step 1: Find sales in 1999 and 2001.
\[ 1999 = 30,000,\quad 2001 = 18,000 \]
Step 2: Find their sum.
\[ 30,000 + 18,000 = 48,000 \]
Step 3: Compare with other years.
\[ 1997 = 48,000 \] Thus, the sum matches the year 1997.
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Question: 3
The percentage increase in sales from 2001 to 2002 was?
The percentage increase in sales from 2001 to 2002 was?
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Always divide the increase by the original value (not the final value) when calculating percentage increase.
Updated On: Apr 21, 2026
- 115%
- 128%
- 122%
- 118%
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The Correct Option is C
Solution and Explanation
Concept:
\[
{Percentage Increase} = \frac{{Increase}}{{Original Value}} \times 100
\]
Step 1: Find sales in 2001 and 2002.
\[ 2001 = 18,000,\quad 2002 = 40,000 \]
Step 2: Find increase.
\[ 40,000 - 18,000 = 22,000 \]
Step 3: Calculate percentage increase.
\[ \frac{22,000}{18,000} \times 100 = \frac{22}{18} \times 100 = 122.22% \approx 122% \]
Hence, the percentage increase is 122%.
Step 1: Find sales in 2001 and 2002.
\[ 2001 = 18,000,\quad 2002 = 40,000 \]
Step 2: Find increase.
\[ 40,000 - 18,000 = 22,000 \]
Step 3: Calculate percentage increase.
\[ \frac{22,000}{18,000} \times 100 = \frac{22}{18} \times 100 = 122.22% \approx 122% \]
Hence, the percentage increase is 122%.
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