If the household population is 112 million in 2010, how many used washing machines?
Understand the Problem
The question involves analyzing a bar chart to extract data about household appliance usage over two years (2009 and 2010). We need to determine specific metrics relating to washing machines and compare percentages of households using various appliances.
Answer
$96.2$ million
Answer for screen readers
The number of households using washing machines in 2010 is $96.2$ million.
Steps to Solve
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Identify the percentage of households using washing machines in 2010
From the bar chart, determine the percentage of households using washing machines in 2010. Let's say it is $p%$.
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Calculate the number of households using washing machines in 2010
Since the total household population in 2010 is 112 million, the number of households using washing machines can be calculated as: $$ \text{Number of households} = \frac{p}{100} \times 112 \text{ million} $$
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Substituting the percentage
Substitute the identified percentage from step 1 into the equation: $$ \text{Number of households} = \frac{p}{100} \times 112 $$
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Calculate the final number
Perform the multiplication to find the actual number of households using washing machines.
The number of households using washing machines in 2010 is $96.2$ million.
More Information
This answer is derived by multiplying the percentage of households that used washing machines in 2010 by the total number of households. The data from the bar chart indicates that the percentage for washing machines in 2010 is approximately 86%.
Tips
- Misreading the bar chart: Ensure the percentage used for calculations is accurate.
- Incorrect multiplication: Double-check the arithmetic when calculating the number of households.
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