Percentage distribution of total population of six cities A–F, and percentage of adults within each. Population of City A = 257400.
| City | Population (%) | Adults (%) |
|---|---|---|
| A | 23.4 | 77 |
| B | 21.6 | 68 |
| C | 8.4 | 73 |
| D | 18.9 | 75 |
| E | 17.5 | 69 |
| F | 10.2 | 72 |
The adult population of City B and City C together as a percentage of the population of all six cities together is approximately
A18%
B21% ✓ Correct
C25%
D27%
Correct answer: (B) 21%
Explanation
The answer is about 21 percent.
City B is 21.6 percent of 1100000, which is 237600, and its adults are 68 percent, or 161568.
City C is 8.4 percent, which is 92400, and its adults are 73 percent, or 67452.
The combined adult total is 161568 plus 67452, which is 229020.
As a percent of 1100000, this is about 20.82 percent.
That rounds to 21 percent.
So the answer is about 21 percent.
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