Question

By what percent did the number of personal computers sold by Compaq increase from 1992 to 1993? 

 

• A. 50%
• B. 65%
• C. 75%
• D. 100%
• E. 110%

Hint:

When a quantity doubles, the percent increase is 100%. If it triples, the increase is 200%, and so on. Recognizing this pattern can save calculation time.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
This question asks for the percent increase in sales for a specific company between two years. We need to read the values from the bar graph and apply the percent change formula.
Step 2: Key Formula or Approach:
The formula for percent increase is:
\[ \text{Percent Increase} = \left( \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \right) \times 100% \] Step 3: Detailed Explanation:
From the graph, we find the sales for Compaq:
- Old Value (1992 sales) = 0.7 million.
- New Value (1993 sales) = 1.4 million.
First, calculate the amount of increase:
\[ \text{Increase} = \text{New Value} - \text{Old Value} = 1.4 - 0.7 = 0.7 \text{ million} \] Now, use the percent increase formula:
\[ \text{Percent Increase} = \left( \frac{0.7}{0.7} \right) \times 100% \] \[ \text{Percent Increase} = 1 \times 100% = 100% \] The number of computers sold by Compaq doubled, which is a 100% increase.
Step 4: Final Answer:
The number of personal computers sold by Compaq increased by 100% from 1992 to 1993.