What was the ratio of females in the country B in year 2015 and 2017 together to the number of females in country E in same year together?
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Always double-check that you are reading the correct column (Female instead of Male) and the correct years from the table to avoid common data extraction errors.
Step 1: Understanding the Concept:
To find the ratio between two composite groups, we sum the specific values for each group and then express them as a simplified fraction. Step 2: Detailed Explanation:
Let us extract the relevant data from the table:
1. Country B (Females in 2015 and 2017):
- Female population in B in 2015 = 4.5 (thousand)
- Female population in B in 2017 = 5.5 (thousand)
\[ \text{Total B Females} = 4.5 + 5.5 = 10.0\text{ thousand} \]
2. Country E (Females in 2015 and 2017):
- Female population in E in 2015 = 4.2 (thousand)
- Female population in E in 2017 = 6.8 (thousand)
\[ \text{Total E Females} = 4.2 + 6.8 = 11.0\text{ thousand} \]
3. Calculate the ratio:
\[ \text{Ratio} = \frac{\text{Total B Females}}{\text{Total E Females}} = \frac{10.0}{11.0} = \frac{10}{11} \]
This corresponds to the ratio 10 : 11.
This matches Option C. Step 3: Final Answer:
The ratio is 10 : 11.
